/* ============================================
   CSS VARIABLES - TEMA LOGO
   ============================================ */
:root {
    /* Warna Logo */
    --bg-primary: #2C353D;
    --bg-secondary: #3A4550;
    --bg-tertiary: #4A5560;
    --text-primary: #FFFFFF;
    --text-secondary: #E0E0E0;
    --text-muted: #B0B0B0;
    --accent-color: #4DABE6;
    --accent-hover: #3D9BC6;
    --success-color: #28A745;
        --danger-color: #DC3545;
    --warning-color: #FFC107;
    --border-color: #4A5560;
    --shadow-sm: 0 2px 5px rgba(0,0,0,0.2);
    --shadow: 0 4px 15px rgba(0,0,0,0.3);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.4);
    --gradient-primary: linear-gradient(135deg, #4DABE6 0%, #2C353D 100%);
    --gradient-secondary: linear-gradient(135deg, #4DABE6 0%, #FFFFFF 100%);
}

/* Light Mode Override */
[data-theme="light"] {
    --bg-primary: #FFFFFF;
    --bg-secondary: #F5F5F5;
    --bg-tertiary: #FAFAFA;
    --text-primary: #2C353D;
    --text-secondary: #4A5560;
    --text-muted: #6C757D;
    --accent-color: #4DABE6;
    --accent-hover: #3D9BC6;
    --success-color: #28A745;
    --danger-color: #DC3545;
    --warning-color: #FFC107;
    --border-color: #E0E0E0;
    --shadow-sm: 0 2px 5px rgba(0,0,0,0.05);
    --shadow: 0 4px 15px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: all 0.3s ease;
    line-height: 1.6;
    overflow-x: hidden;
}

/* ============================================
   NAVIGATION BAR
   ============================================ */
.navbar {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    padding: 1rem 2rem;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
    border-bottom: 2px solid var(--accent-color);
}

.nav-decoration {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    animation: gradientMove 3s ease infinite;
}

@keyframes gradientMove {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.nav-brand {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.nav-brand h1 {
    font-size: 1.8rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
}

.brand-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: all 0.3s;
    position: relative;
    padding: 0.5rem 0;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.nav-menu a:hover {
    color: var(--accent-color);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-primary);
    cursor: pointer;
    padding: 0.5rem;
    transition: transform 0.3s;
}

.nav-toggle:hover {
    transform: scale(1.1);
}

.theme-toggle {
    background: none;
    border: none;
    font-size: 1.3rem;
    color: var(--text-primary);
    cursor: pointer;
    padding: 0.75rem;
    border-radius: 50%;
    transition: all 0.3s;
    margin-left: 1rem;
}

.theme-toggle:hover {
    background-color: var(--bg-tertiary);
    transform: rotate(15deg);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    padding: 2rem;
    position: relative;
    overflow: hidden;
}

.hero-decoration {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.floating-shape {
    position: absolute;
    border-radius: 50%;
    background: var(--accent-color);
    opacity: 0.1;
    animation: float 6s ease-in-out infinite;
}

.shape-1 {
    width: 200px;
    height: 200px;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 150px;
    height: 150px;
    top: 60%;
    right: 15%;
    animation-delay: 2s;
}

.shape-3 {
    width: 100px;
    height: 100px;
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-30px) rotate(180deg); }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.5rem;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50px;
    font-size: 0.9rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.badge-icon {
    font-size: 1.2rem;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent-color);
    transform: translateY(-3px);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* ============================================
   SECTIONS
   ============================================ */
section {
    padding: 6rem 2rem;
    position: relative;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-decoration {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    overflow: hidden;
}

.decoration-circle {
    position: absolute;
    border-radius: 50%;
    background: var(--accent-color);
    opacity: 0.05;
}

.decoration-circle:nth-child(1) {
    width: 300px;
    height: 300px;
    top: 10%;
    left: -100px;
}

.decoration-circle:nth-child(2) {
    width: 200px;
    height: 200px;
    bottom: 10%;
    right: -50px;
}

.decoration-star {
    position: absolute;
    font-size: 3rem;
    color: var(--accent-color);
    opacity: 0.1;
}

.decoration-star:nth-child(1) {
    top: 15%;
    left: 5%;
}

.decoration-star:nth-child(2) {
    bottom: 20%;
    right: 10%;
}

.decoration-bubble {
    position: absolute;
    border-radius: 50%;
    background: var(--accent-color);
    opacity: 0.05;
}

.decoration-bubble:nth-child(1) {
    width: 150px;
    height: 150px;
    top: 20%;
    left: 10%;
}

.decoration-bubble:nth-child(2) {
    width: 100px;
    height: 100px;
    bottom: 15%;
    right: 15%;
}

.decoration-line {
    position: absolute;
    height: 2px;
    background: var(--accent-color);
    opacity: 0.2;
}

.decoration-line:nth-child(1) {
    top: 10%;
    left: 0;
    width: 100px;
}

.decoration-line:nth-child(2) {
    top: 10%;
    right: 0;
    width: 100px;
}

.decoration-line:nth-child(3) {
    bottom: 10%;
    left: 0;
    width: 100px;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.section-header h2 i {
    margin-right: 0.5rem;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about {
    padding: 6rem 2rem;
    position: relative;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.about-card {
    background: var(--bg-secondary);
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--accent-color);
}

.about-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.card-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
}

.about-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.about-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.card-stats {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.card-stats span {
    background: var(--bg-tertiary);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-primary);
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact {
    padding: 6rem 2rem;
    position: relative;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.contact-card {
    background: var(--bg-secondary);
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    border: 1px solid var(--border-color);
}

.contact-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.contact-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 1.5rem;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: white;
}

.contact-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.contact-card p {
    color: var(--text-secondary);
}

/* ============================================
   SECTION HEADER
   ============================================ */
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.section-header h2 i {
    margin-right: 0.5rem;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* ============================================
   CONTAINER
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
}
/* ============================================
   MEMORIES SECTION
   ============================================ */
.add-memory-btn {
    text-align: center;
    margin-bottom: 3rem;
}

.add-memory-btn button {
    padding: 1rem 2rem;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.add-memory-btn button:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.memory-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.memory-item {
    background: var(--bg-secondary);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    border: 1px solid var(--border-color);
}

.memory-item:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

.memory-image {
    position: relative;
    overflow: hidden;
}

.memory-image img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.3s;
}

.memory-item:hover .memory-image img {
    transform: scale(1.1);
}

.memory-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(44, 53, 61, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    opacity: 0;
    transition: opacity 0.3s;
}

.memory-item:hover .memory-overlay {
    opacity: 1;
}

.memory-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    transition: all 0.3s;
}

.memory-btn:hover {
    background: var(--accent-color);
    color: white;
    transform: scale(1.1);
}

.memory-info {
    padding: 1.5rem;
}

.memory-info h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.memory-info p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.memory-meta {
    display: flex;
    gap: 1.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.memory-meta span {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

/* ============================================
   CHAT SECTION
   ============================================ */
.chat-section {
    background: var(--bg-secondary);
}

.chat-container {
    max-width: 700px;
    margin: 0 auto;
    background: var(--bg-primary);
    border-radius: 15px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.chat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    background: var(--gradient-primary);
    color: white;
}

.chat-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.status-dot {
    width: 10px;
    height: 10px;
    background: #28a745;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.chat-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.chat-messages {
    height: 400px;
    overflow-y: auto;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.message {
    padding: 1rem;
    border-radius: 10px;
    max-width: 80%;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.user {
    background: var(--gradient-primary);
    color: white;
    align-self: flex-end;
    border-bottom-right-radius: 0;
}

.message.system {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    align-self: center;
    text-align: center;
    max-width: 100%;
    font-style: italic;
}

.message.admin {
    background: var(--warning-color);
    color: var(--text-primary);
    align-self: flex-start;
    border-bottom-left-radius: 0;
}

.chat-input {
    display: flex;
    padding: 1rem;
    background: var(--bg-secondary);
    gap: 0.5rem;
    border-top: 1px solid var(--border-color);
}

.chat-input input {
    flex: 1;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 50px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.3s;
}

.chat-input input:focus {
    outline: none;
    border-color: var(--accent-color);
}

.chat-input button {
    padding: 1rem 2rem;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.3s;
}

.chat-input button:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow);
}

/* ============================================
   FOOTER
   ============================================ */
footer {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    padding: 4rem 2rem 2rem;
    position: relative;
    border-top: 3px solid var(--accent-color);
}

.footer-decoration {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: var(--gradient-primary);
}

.decoration-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%234DABE6' fill-opacity='0.1' d='M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,112C672,96,768,96,864,112C960,128,1056,160,1152,160C1248,160,1344,128,1392,112L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z'%3E%3C/path%3E%3C/svg%3E");
    background-size: cover;
    background-repeat: no-repeat;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand h2 {
    font-size: 1.8rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.footer-brand p {
    color: var(--text-secondary);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s;
}

.footer-links a:hover {
    color: var(--accent-color);
    padding-left: 0.5rem;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

.footer-social a {
    width: 45px;
    height: 45px;
    background: var(--bg-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.3s;
    box-shadow: var(--shadow);
}

.footer-social a:hover {
    background: var(--gradient-primary);
    color: white;
    transform: translateY(-5px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    color: var(--text-secondary);
}

/* ============================================
   MODAL
   ============================================ */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(44, 53, 61, 0.8);
    backdrop-filter: blur(5px);
    overflow-y: auto;
}

.modal-content {
    background-color: var(--bg-primary);
    margin: 5% auto;
    padding: 2.5rem;
    border-radius: 15px;
    max-width: 600px;
    position: relative;
    box-shadow: var(--shadow-lg);
    animation: modalSlide 0.3s ease;
    border: 1px solid var(--border-color);
}

@keyframes modalSlide {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    text-align: center;
    margin-bottom: 2rem;
}

.modal-header h2 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.modal-header p {
    color: var(--text-secondary);
}

.close {
    position: absolute;
    right: 1.5rem;
    top: 1.5rem;
    font-size: 1.8rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: all 0.3s;
}

.close:hover {
    color: var(--danger-color);
    transform: rotate(90deg);
}

.modal-content form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-group input,
.form-group textarea {
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(77, 171, 230, 0.1);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

/* ============================================
   TOAST NOTIFICATION
   ============================================ */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    padding: 1rem 2rem;
    background: var(--gradient-primary);
    color: white;
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
    transform: translateX(150%);
    transition: transform 0.3s ease;
    z-index: 3000;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.toast.show {
    transform: translateX(0);
}

.toast.error {
    background: var(--gradient-secondary);
}

.toast.warning {
    background: var(--warning-color);
    color: var(--text-primary);
}

/* ============================================
   SCROLLBAR
   ============================================ */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: 6px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-color);
}

/* ============================================
   SMOOTH SCROLL
   ============================================ */
html {
    scroll-behavior: smooth;
}

/* ============================================
   LOADING ANIMATION
   ============================================ */
.loading {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid var(--bg-secondary);
    border-radius: 50%;
    border-top-color: var(--accent-color);
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--bg-secondary);
        padding: 1.5rem;
        box-shadow: var(--shadow);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-toggle {
        display: block;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-stats {
        gap: 2rem;
    }

    section {
        padding: 4rem 1.5rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .section-subtitle {
        font-size: 1rem;
    }

    .about-grid,
    .memory-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .chat-messages {
        height: 300px;
        padding: 1rem;
    }

    .chat-input {
        padding: 1rem;
    }

    .modal-content {
        margin: 10% auto;
        padding: 1.5rem;
        width: 90%;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-social {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .nav-brand h1 {
        font-size: 1.3rem;
    }

    .brand-subtitle {
        font-size: 0.75rem;
    }

    .hero-title {
        font-size: 1.8rem;
    }

    .hero-description {
        font-size: 0.9rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }

    .stat-number {
        font-size: 1.5rem;
    }

    .section-header h2 {
        font-size: 1.8rem;
    }

    .about-card,
    .contact-card {
        padding: 1.5rem;
    }

    .card-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }

    .memory-image img {
        height: 200px;
    }

    .memory-info {
        padding: 1rem;
    }

    .memory-meta {
        flex-direction: column;
        gap: 0.5rem;
    }

    .chat-header {
        padding: 1rem;
    }

    .chat-messages {
        height: 250px;
    }

    .chat-input {
        padding: 0.75rem;
    }

    .chat-input input {
        padding: 0.75rem;
        font-size: 0.9rem;
    }

    .chat-input button {
        padding: 0.75rem 1.25rem;
        font-size: 1rem;
    }

    .footer-content {
        gap: 2rem;
    }

    .footer-brand h2 {
        font-size: 1.5rem;
    }

    .footer-social a {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }

    .modal-content {
        margin: 15% auto;
        padding: 1.5rem;
    }

    .modal-header h2 {
        font-size: 1.5rem;
    }

    .form-actions {
        flex-direction: column;
    }

    .form-actions button {
        width: 100%;
    }

    .toast {
        left: 20px;
        right: 20px;
        bottom: 20px;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .nav-menu {
        gap: 1.5rem;
    }

    .hero-title {
        font-size: 3rem;
    }

    .about-grid,
    .memory-grid,
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .navbar,
    .nav-toggle,
    .theme-toggle,
    .add-memory-btn,
    .chat-section,
    .modal,
    .toast {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    section {
        page-break-inside: avoid;
    }

    .memory-item {
        break-inside: avoid;
    }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus Visible for Accessibility */
*:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --text-primary: #000000;
        --text-secondary: #333333;
        --border-color: #000000;
    }

    .btn-primary,
    .btn-secondary {
        border: 2px solid currentColor;
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }
.p-4 { padding: 2rem; }

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease;
}

.slide-up {
    animation: slideUp 0.5s ease;
}

.scale-in {
    animation: scaleIn 0.3s ease;
}

/* ============================================
   LOADING STATES
   ============================================ */
.loading-state {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 3rem;
}

.loading-state .loading {
    width: 40px;
    height: 40px;
    border-width: 4px;
}

/* ============================================
   ERROR STATES
   ============================================ */
.error-state {
    text-align: center;
    padding: 3rem;
    color: var(--danger-color);
}

.error-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
}

/* ============================================
   SUCCESS STATES
   ============================================ */
.success-state {
    text-align: center;
    padding: 3rem;
    color: var(--success-color);
}

.success-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
}

/* ============================================
   BADGES
   ============================================ */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-primary {
    background: var(--accent-color);
    color: white;
}

.badge-success {
    background: var(--success-color);
    color: white;
}

.badge-danger {
    background: var(--danger-color);
    color: white;
}

.badge-warning {
    background: var(--warning-color);
    color: var(--text-primary);
}

/* ============================================
   AVATAR
   ============================================ */
.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
}

.avatar-lg {
    width: 60px;
    height: 60px;
}

.avatar-xl {
    width: 80px;
    height: 80px;
}

/* ============================================
   DIVIDER
   ============================================ */
.divider {
    height: 1px;
    background: var(--border-color);
    margin: 2rem 0;
}

.divider-dashed {
    height: 1px;
    background: repeating-linear-gradient(
        90deg,
        var(--border-color),
        var(--border-color) 5px,
        transparent 5px,
        transparent 10px
    );
    margin: 2rem 0;
}

/* ============================================
   CARD
   ============================================ */
.card {
    background: var(--bg-secondary);
    border-radius: 10px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.card-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    background: var(--bg-tertiary);
}

/* ============================================
   TABLE
   ============================================ */
.table-responsive {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table thead {
    background: var(--bg-tertiary);
}

.table tbody tr:hover {
    background: var(--bg-tertiary);
}

/* ============================================
   FORM
   ============================================ */
.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(77, 171, 230, 0.1);
}

.form-control::placeholder {
    color: var(--text-muted);
}

/* ============================================
   BUTTON GROUP
   ============================================ */
.btn-group {
    display: flex;
    gap: 0.5rem;
}

.btn-group .btn {
    flex: 1;
}

/* ============================================
   GRID SYSTEM
   ============================================ */
.grid {
    display: grid;
    gap: 1.5rem;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* ============================================
   FLEXBOX UTILITIES
   ============================================ */
.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }
.gap-4 { gap: 2rem; }

/* ============================================
   FINAL TOUCHES
   ============================================ */
/* Ensure all elements are accessible */
@media (prefers-contrast: high) {
    .btn,
    .memory-btn,
    .theme-toggle {
        border: 2px solid currentColor;
    }
}

/* Improve touch targets for mobile */
@media (pointer: coarse) {
    .btn,
    .nav-menu a,
    .memory-btn,
    .theme-toggle {
        min-height: 44px;
        min-width: 44px;
    }
}

/* Smooth transitions for theme changes */
body,
.navbar,
section,
.card,
.modal-content {
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* ============================================
   END OF CSS
   ============================================ */