/**
 * KimbabChat TeenChat - Main Stylesheet
 * Modern, safe, and friendly design for teenagers
 */

:root {
    --color-primary: #6366f1;
    --color-primary-dark: #4f46e5;
    --color-primary-light: #818cf8;
    --color-secondary: #ec4899;
    --color-accent: #06b6d4;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-bg: #fafafa;
    --color-bg-card: #ffffff;
    --color-bg-dark: #1e1b4b;
    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-text-inverse: #ffffff;
    --color-border: #e5e7eb;
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
    --gradient-hero: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #4c1d95 100%);
    --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --transition-fast: 150ms ease;
}

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

body {
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-dark); }
img { max-width: 100%; height: auto; }

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 1rem; }

/* Header */
.header {
    background: var(--color-bg-card);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo { display: flex; align-items: center; gap: 0.75rem; }
.logo-img { width: 40px; height: 40px; border-radius: var(--radius-lg); }
.logo-text { font-size: 1.25rem; font-weight: 700; color: var(--color-text); }

.nav { display: flex; align-items: center; gap: 1.5rem; }
.nav-link {
    font-weight: 500;
    color: var(--color-text);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}
.nav-link:hover { color: var(--color-primary); background: rgba(99, 102, 241, 0.1); }

.mobile-menu-btn { display: none; }

.main { flex: 1; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-primary { background: var(--gradient-primary); color: white; }
.btn-primary:hover { opacity: 0.9; transform: translateY(-1px); color: white; }
.btn-secondary { background: var(--color-bg); color: var(--color-text); border: 2px solid var(--color-border); }
.btn-secondary:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn-google { background: white; color: var(--color-text); border: 2px solid var(--color-border); padding: 1rem 2rem; }
.btn-google:hover { background: var(--color-bg); }
.btn-google img { width: 20px; height: 20px; }
.btn-lg { padding: 1rem 2rem; font-size: 1.125rem; }
.btn-sm { padding: 0.5rem 1rem; font-size: 0.875rem; }

/* Forms */
.form-group { margin-bottom: 1.5rem; }
.form-label { display: block; font-weight: 600; margin-bottom: 0.5rem; }
.form-input, .form-select {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: inherit;
    font-size: 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: white;
}
.form-input:focus, .form-select:focus { outline: none; border-color: var(--color-primary); }
.form-hint { font-size: 0.875rem; color: var(--color-text-light); margin-top: 0.25rem; }
.form-error { color: var(--color-error); font-size: 0.875rem; margin-top: 0.25rem; }

/* Checkbox Grid */
.checkbox-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 0.75rem; }
.checkbox-card {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: white;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition-fast);
}
.checkbox-card:hover { border-color: var(--color-primary-light); }
.checkbox-card.selected { border-color: var(--color-primary); background: rgba(99, 102, 241, 0.05); }
.checkbox-card input { display: none; }
.checkbox-icon {
    width: 24px;
    height: 24px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}
.checkbox-card.selected .checkbox-icon { background: var(--color-primary); border-color: var(--color-primary); color: white; }

/* Cards */
.card { background: white; border-radius: var(--radius-xl); box-shadow: var(--shadow-md); overflow: hidden; }
.card-header { padding: 1.5rem; border-bottom: 1px solid var(--color-border); }
.card-body { padding: 1.5rem; }
.card-footer { padding: 1.5rem; border-top: 1px solid var(--color-border); background: var(--color-bg); }

/* Hero */
.hero {
    background: var(--gradient-hero);
    color: white;
    padding: 4rem 0;
    text-align: center;
}
.hero-title { font-size: 2.5rem; font-weight: 700; margin-bottom: 1rem; }
.hero-subtitle { font-size: 1.25rem; opacity: 0.9; margin-bottom: 2rem; max-width: 600px; margin-left: auto; margin-right: auto; }

/* Features */
.features { padding: 4rem 0; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; }
.feature-card { text-align: center; padding: 2rem; }
.feature-icon { font-size: 3rem; margin-bottom: 1rem; }
.feature-title { font-size: 1.25rem; font-weight: 600; margin-bottom: 0.5rem; }
.feature-description { color: var(--color-text-light); }

/* Chat Container */
.chat-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 1.5rem;
    height: calc(100vh - 150px);
    padding: 1.5rem 0;
}

.chat-sidebar {
    background: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.chat-sidebar-header { padding: 1rem; border-bottom: 1px solid var(--color-border); }
.chat-rooms-list { flex: 1; overflow-y: auto; padding: 0.5rem; }

.chat-room-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition-fast);
}
.chat-room-item:hover { background: var(--color-bg); }
.chat-room-item.active { background: rgba(99, 102, 241, 0.1); color: var(--color-primary); }
.chat-room-emoji { font-size: 1.5rem; }
.chat-room-info { flex: 1; min-width: 0; }
.chat-room-name { font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.chat-room-members { font-size: 0.875rem; color: var(--color-text-light); }

.chat-main {
    background: white;
    border-radius: var(--radius-xl);
    display: flex;
    flex-direction: column;
}

.chat-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.chat-message {
    display: flex;
    gap: 0.75rem;
    max-width: 80%;
    animation: messageAppear 0.3s ease;
}

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

.chat-message.own { align-self: flex-end; flex-direction: row-reverse; }

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.message-content { background: var(--color-bg); padding: 0.75rem 1rem; border-radius: var(--radius-lg); }
.chat-message.own .message-content { background: var(--color-primary); color: white; }
.message-author { font-size: 0.75rem; font-weight: 600; margin-bottom: 0.25rem; color: var(--color-text-light); }
.chat-message.own .message-author { color: rgba(255,255,255,0.8); }
.message-text { word-break: break-word; }
.message-time { font-size: 0.75rem; color: var(--color-text-light); margin-top: 0.25rem; }
.chat-message.own .message-time { color: rgba(255,255,255,0.7); }
.message-timer { display: inline-flex; align-items: center; gap: 0.25rem; font-size: 0.75rem; color: var(--color-text-light); margin-left: 0.5rem; }

.chat-input-area { padding: 1rem 1.5rem; border-top: 1px solid var(--color-border); }
.chat-input-form { display: flex; gap: 0.75rem; }
.chat-input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 1rem;
    font-family: inherit;
}
.chat-input:focus { outline: none; border-color: var(--color-primary); }

.chat-send-btn {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    border: none;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}
.chat-send-btn:hover { transform: scale(1.05); }

.ephemeral-notice {
    text-align: center;
    padding: 0.5rem;
    background: rgba(99, 102, 241, 0.1);
    color: var(--color-primary);
    font-size: 0.875rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
}

.no-chat-selected {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2rem;
    color: var(--color-text-light);
}
.no-chat-icon { font-size: 4rem; margin-bottom: 1rem; opacity: 0.5; }

/* Alerts */
.alert { padding: 1rem; }
.alert-success { background: rgba(16, 185, 129, 0.1); color: var(--color-success); }
.alert-error { background: rgba(239, 68, 68, 0.1); color: var(--color-error); }

/* Login Page */
.login-page {
    min-height: calc(100vh - 70px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}
.login-card { max-width: 420px; width: 100%; text-align: center; }
.login-card .card-body { padding: 2.5rem; }
.login-title { font-size: 1.5rem; font-weight: 700; margin-bottom: 0.5rem; }
.login-subtitle { color: var(--color-text-light); margin-bottom: 2rem; }

/* Verify Page */
.verify-page { padding: 3rem 0; }
.verify-card { max-width: 600px; margin: 0 auto; }
.verify-steps { display: flex; justify-content: center; gap: 1rem; margin-bottom: 2rem; }
.verify-step { display: flex; align-items: center; gap: 0.5rem; }
.step-number {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
}
.verify-step.active .step-number { background: var(--gradient-primary); color: white; }
.verify-step.completed .step-number { background: var(--color-success); color: white; }
.step-label { font-size: 0.875rem; color: var(--color-text-light); }
.verify-step.active .step-label { color: var(--color-text); font-weight: 500; }

/* Profile */
.profile-header {
    background: var(--gradient-hero);
    padding: 3rem 0;
    text-align: center;
    color: white;
}
.profile-avatar {
    width: 100px;
    height: 100px;
    border-radius: var(--radius-full);
    background: white;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
}
.profile-name { font-size: 1.5rem; font-weight: 700; margin-bottom: 0.5rem; }
.profile-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(255,255,255,0.2);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
}
.profile-content { padding: 2rem 0; }
.profile-section { margin-bottom: 2rem; }
.profile-section-title { font-size: 1.125rem; font-weight: 600; margin-bottom: 1rem; }
.interest-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.interest-tag {
    padding: 0.5rem 1rem;
    background: rgba(99, 102, 241, 0.1);
    color: var(--color-primary);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
}

/* Footer */
.footer {
    background: var(--color-bg-dark);
    color: white;
    padding: 3rem 0 1.5rem;
    margin-top: auto;
}
.footer-content { display: grid; grid-template-columns: 1fr 2fr 1fr; gap: 2rem; margin-bottom: 2rem; }
.footer-logo { width: 48px; height: 48px; border-radius: var(--radius-lg); margin-bottom: 0.75rem; }
.footer-tagline { opacity: 0.8; font-size: 0.875rem; }
.footer-links { display: flex; justify-content: center; gap: 1.5rem; }
.footer-links a { color: white; opacity: 0.8; }
.footer-links a:hover { opacity: 1; color: white; }
.safety-notice {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    font-size: 0.875rem;
    opacity: 0.8;
    background: rgba(255,255,255,0.1);
    padding: 1rem;
    border-radius: var(--radius-lg);
}
.safety-icon { font-size: 1.5rem; }
.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    opacity: 0.6;
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .chat-container { grid-template-columns: 1fr; }
    .chat-sidebar { display: none; }
    .footer-content { grid-template-columns: 1fr; text-align: center; }
}

@media (max-width: 768px) {
    .nav { display: none; }
    .mobile-menu-btn { display: flex; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 0.5rem; }
    .mobile-menu-btn span { width: 24px; height: 2px; background: var(--color-text); }
    .hero-title { font-size: 2rem; }
}

/* Utilities */
.text-center { text-align: center; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mb-4 { margin-bottom: 1rem; }
.hidden { display: none; }