/* Intovee Design System CSS */
/* 일관된 브랜딩, 색상, 컴포넌트를 위한 통합 스타일 */

/* ===== CSS Variables (Design Tokens) ===== */
:root {
    /* Brand Colors */
    --intovee-primary: #6366f1;      /* indigo-500 */
    --intovee-secondary: #8b5cf6;    /* purple-500 */
    --intovee-accent: #a855f7;       /* purple-600 */
    --intovee-gradient-start: #818cf8; /* indigo-400 */
    --intovee-gradient-end: #a855f7;   /* purple-500 */
    
    /* Neutral Colors */
    --intovee-white: #ffffff;
    --intovee-gray-50: #f9fafb;
    --intovee-gray-100: #f3f4f6;
    --intovee-gray-200: #e5e7eb;
    --intovee-gray-300: #d1d5db;
    --intovee-gray-400: #9ca3af;
    --intovee-gray-500: #6b7280;
    --intovee-gray-600: #4b5563;
    --intovee-gray-700: #374151;
    --intovee-gray-800: #1f2937;
    --intovee-gray-900: #111827;
    --intovee-gray-950: #030712;
    
    /* Emotion Colors */
    --emotion-joy: #FFD700;      /* 기쁨 - 노란색 */
    --emotion-sadness: #4A90E2;  /* 슬픔 - 파란색 */
    --emotion-anger: #E74C3C;    /* 분노 - 빨간색 */
    --emotion-fear: #8E44AD;     /* 두려움 - 보라색 */
    --emotion-love: #FF69B4;     /* 사랑 - 분홍색 */
    --emotion-surprise: #FFA500; /* 놀람 - 주황색 */
    --emotion-neutral: #95A5A6;  /* 중립 - 회색 */
    
    /* Typography */
    --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-secondary: 'Poppins', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;   /* 4px */
    --spacing-sm: 0.5rem;    /* 8px */
    --spacing-md: 1rem;      /* 16px */
    --spacing-lg: 1.5rem;    /* 24px */
    --spacing-xl: 2rem;      /* 32px */
    --spacing-2xl: 3rem;     /* 48px */
    
    /* Border Radius */
    --radius-sm: 0.25rem;    /* 4px */
    --radius-md: 0.5rem;     /* 8px */
    --radius-lg: 0.75rem;    /* 12px */
    --radius-xl: 1rem;       /* 16px */
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

/* ===== Global Reset & Base Styles ===== */
* {
    box-sizing: border-box;
}

/* Tailwind CSS와 충돌 방지를 위한 선택적 스타일 적용 */
.intovee-body {
    font-family: var(--font-family-primary);
    line-height: 1.6;
    color: var(--intovee-white);
    background-color: var(--intovee-gray-950);
    margin: 0;
    padding: 0;
}

/* ===== Typography ===== */
.intovee-body h1, .intovee-body h2, .intovee-body h3, .intovee-body h4, .intovee-body h5, .intovee-body h6 {
    font-family: var(--font-family-secondary);
    font-weight: 600;
    line-height: 1.2;
    margin: 0 0 var(--spacing-md) 0;
    color: var(--intovee-white);
}

.intovee-body h1 { font-size: 2.5rem; }
.intovee-body h2 { font-size: 2rem; }
.intovee-body h3 { font-size: 1.5rem; }
.intovee-body h4 { font-size: 1.25rem; }
.intovee-body h5 { font-size: 1.125rem; }
.intovee-body h6 { font-size: 1rem; }

.intovee-body p {
    margin: 0 0 var(--spacing-md) 0;
    color: var(--intovee-gray-300);
}

/* ===== Header & Navigation ===== */
.header {
    width: 100%;
    background: var(--intovee-gray-900) !important;
    box-shadow: none;
    backdrop-filter: none;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.5rem 2rem;
    background: none;
    box-shadow: none;
    backdrop-filter: none;
}

.logo {
    font-family: 'Poppins', 'Inter', sans-serif;
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.25px;
    background: linear-gradient(90deg, #6366f1 0%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
}

.vue-logo-gradient {
    font-size: 1.25rem;
    font-weight: 600;
    background: linear-gradient(90deg, #6366f1 0%, #8b5cf6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.nav-menu {
    display: flex;
    gap: 2rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-menu a {
    color: var(--intovee-white);
    font-size: 1.1rem;
    font-weight: 500;
    text-decoration: none;
    transition: color 0.2s;
    padding: 0.2em 0.5em;
    border-radius: 0.5em;
}

.nav-menu a.active,
.nav-menu a:hover {
    color: #ffe066;
    background: rgba(255,255,255,0.07);
}

.language-selector select {
    background: rgba(34,39,47,0.7);
    color: var(--intovee-white);
    border: none;
    border-radius: 0.5em;
    padding: 0.3em 1em;
    font-size: 1rem;
    font-family: inherit;
}

.user-menu .btn-secondary {
    background: rgba(255,255,255,0.10);
    color: var(--intovee-white);
    border: none;
    border-radius: 0.5em;
    padding: 0.4em 1.2em;
    font-size: 1rem;
    font-weight: 500;
    transition: background 0.2s;
}

.user-menu .btn-secondary:hover {
    background: #ffe066;
    color: #232946;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 0.875rem;
    line-height: 1;
}

.btn-primary {
    background-color: var(--intovee-primary);
    color: var(--intovee-white);
}

.btn-primary:hover {
    background-color: #5855eb;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: transparent;
    color: var(--intovee-white);
    border: 1px solid var(--intovee-gray-600);
}

.btn-secondary:hover {
    background-color: var(--intovee-gray-800);
    border-color: var(--intovee-gray-500);
}

.btn-success {
    background-color: #10b981;
    color: var(--intovee-white);
}

.btn-danger {
    background-color: #ef4444;
    color: var(--intovee-white);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* ===== Forms ===== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--intovee-gray-300);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--intovee-gray-600);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    transition: border-color var(--transition-fast);
    background-color: var(--intovee-gray-900);
    color: var(--intovee-white);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--intovee-primary);
    box-shadow: 0 0 0 3px rgb(99 102 241 / 0.1);
}

.form-input.error,
.form-textarea.error,
.form-select.error {
    border-color: #ef4444;
}

.field-error {
    color: #ef4444;
    font-size: 0.75rem;
    margin-top: var(--spacing-xs);
}

/* ===== Cards ===== */
.card {
    background: var(--intovee-gray-900);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-lg);
    border: 1px solid var(--intovee-gray-800);
}

.card-header {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--intovee-gray-800);
}

.card-title {
    margin: 0;
    color: var(--intovee-white);
}

/* ===== Emotion Components ===== */
.emotion-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    background: var(--intovee-gray-900);
    color: var(--intovee-gray-300);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin: var(--spacing-xs);
}

.emotion-btn.joy { border-color: var(--emotion-joy); }
.emotion-btn.sadness { border-color: var(--emotion-sadness); }
.emotion-btn.anger { border-color: var(--emotion-anger); }
.emotion-btn.fear { border-color: var(--emotion-fear); }
.emotion-btn.love { border-color: var(--emotion-love); }
.emotion-btn.surprise { border-color: var(--emotion-surprise); }
.emotion-btn.neutral { border-color: var(--emotion-neutral); }

.emotion-btn:hover,
.emotion-btn.active {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.emotion-btn.joy:hover,
.emotion-btn.joy.active {
    background-color: var(--emotion-joy);
    color: var(--intovee-white);
}

.emotion-btn.sadness:hover,
.emotion-btn.sadness.active {
    background-color: var(--emotion-sadness);
    color: var(--intovee-white);
}

.emotion-btn.anger:hover,
.emotion-btn.anger.active {
    background-color: var(--emotion-anger);
    color: var(--intovee-white);
}

.emotion-btn.fear:hover,
.emotion-btn.fear.active {
    background-color: var(--emotion-fear);
    color: var(--intovee-white);
}

.emotion-btn.love:hover,
.emotion-btn.love.active {
    background-color: var(--emotion-love);
    color: var(--intovee-white);
}

.emotion-btn.surprise:hover,
.emotion-btn.surprise.active {
    background-color: var(--emotion-surprise);
    color: var(--intovee-white);
}

.emotion-btn.neutral:hover,
.emotion-btn.neutral.active {
    background-color: var(--emotion-neutral);
    color: var(--intovee-white);
}

/* Emotion Tags */
.emotion-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin: var(--spacing-xs);
}

.emotion-tag.joy { background-color: var(--emotion-joy); color: var(--intovee-white); }
.emotion-tag.sadness { background-color: var(--emotion-sadness); color: var(--intovee-white); }
.emotion-tag.anger { background-color: var(--emotion-anger); color: var(--intovee-white); }
.emotion-tag.fear { background-color: var(--emotion-fear); color: var(--intovee-white); }
.emotion-tag.love { background-color: var(--emotion-love); color: var(--intovee-white); }
.emotion-tag.surprise { background-color: var(--emotion-surprise); color: var(--intovee-white); }
.emotion-tag.neutral { background-color: var(--emotion-neutral); color: var(--intovee-white); }

.emotion-tag:hover,
.emotion-tag.selected {
    transform: scale(1.05);
    box-shadow: var(--shadow-sm);
}

/* ===== Label text shimmer (entrance CTA, Room Follow when not following) ===== */
.btn-shimmer-text-demo {
    --btn-shimmer-text-period: 6s;
    animation: btn-shimmer-text-soft var(--btn-shimmer-text-period, 6s) ease-in-out infinite;
}

@media (min-width: 640px) {
    .btn-shimmer-text-demo.btn-shimmer-text-demo--gradient {
        background-size: 220% auto;
        animation: btn-shimmer-text-flow var(--btn-shimmer-text-period, 6s) ease-in-out infinite;
    }
}

@keyframes btn-shimmer-text-flow {
    0%,
    100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

@keyframes btn-shimmer-text-soft {
    0%,
    100% {
        opacity: 0.88;
    }
    50% {
        opacity: 1;
    }
}

@media (prefers-reduced-motion: reduce) {
    .btn-shimmer-text-demo {
        animation: none !important;
    }
}

/* ===== Loading States ===== */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--intovee-gray-600);
    border-radius: 50%;
    border-top-color: var(--intovee-primary);
    animation: spin 1s ease-in-out infinite;
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    backdrop-filter: blur(5px);
}

.loading-content {
    background: rgba(31, 41, 55, 0.95);
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid rgba(75, 85, 99, 0.3);
    text-align: center;
    color: var(--intovee-white);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(99, 102, 241, 0.3);
    border-top: 3px solid var(--intovee-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-content p {
    margin: 0;
    font-size: 1rem;
    color: var(--intovee-gray-300);
}

/* ===== Notifications ===== */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    color: var(--intovee-white);
    font-weight: 500;
    z-index: 10000;
    max-width: 400px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    transform: translateX(100%);
    transition: transform 0.3s ease;
}

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

.notification.success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    border-left: 4px solid #047857;
}

.notification.error {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    border-left: 4px solid #b91c1c;
}

.notification.warning {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    border-left: 4px solid #b45309;
}

.notification.info {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
    border-left: 4px solid #1d4ed8;
}

.notification .notification-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.notification .notification-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.notification .notification-message {
    flex: 1;
    font-size: 0.9rem;
}

.notification .notification-close {
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 0.25rem;
    transition: background-color 0.2s;
}

.notification .notification-close:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* ===== Layout Utilities ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.main {
    min-height: calc(100vh - 140px);
    padding: var(--spacing-xl) 0;
    margin-top: 70px;
}

.footer {
    background: var(--intovee-gray-900);
    color: var(--intovee-white);
    padding: 2rem 0;
    margin-top: auto;
    font-size: 0.875rem;
}

.footer a {
    color: var(--intovee-white);
    text-decoration: none;
    transition: color 0.2s;
    font-size: 0.875rem;
}

.footer a:hover {
    color: #ffe066;
}

.footer-bottom {
    border-top: 1px solid #374151;
}

.footer-bottom p {
    color: var(--intovee-white);
    margin: 0;
    font-size: 0.875rem;
}

.footer-brand {
    font-size: 0.875rem;
}

.footer-copyright {
    text-align: center;
    flex: 1;
}

.footer-links {
    font-size: 0.875rem;
}

.border-top {
    border-top: 1px solid var(--intovee-gray-700);
}

/* ===== Grid System ===== */
.grid {
    display: grid;
}

.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.grid-cols-6 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.grid-cols-12 { grid-template-columns: repeat(12, minmax(0, 1fr)); }

.gap-1 { gap: var(--spacing-xs); }
.gap-2 { gap: var(--spacing-sm); }
.gap-3 { gap: var(--spacing-md); }
.gap-4 { gap: var(--spacing-lg); }
.gap-5 { gap: var(--spacing-xl); }
.gap-6 { gap: var(--spacing-2xl); }
.gap-8 { gap: calc(var(--spacing-2xl) + var(--spacing-lg)); }

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .nav {
        flex-direction: column;
        height: auto;
        padding: var(--spacing-md);
    }
    
    .nav-menu {
        flex-direction: column;
        width: 100%;
        margin-top: var(--spacing-md);
    }
    
    .nav-menu li a {
        display: block;
        text-align: center;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    
    /* Mobile Grid */
    .md-grid-cols-2 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
    .md-grid-cols-3 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
    .md-grid-cols-4 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
}

@media (min-width: 768px) {
    .md-grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .md-grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .md-grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* ===== Utility Classes ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }
.mt-12 { margin-top: calc(var(--spacing-xl) * 3); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }
.mb-6 { margin-bottom: var(--spacing-2xl); }
.mb-12 { margin-bottom: calc(var(--spacing-xl) * 3); }
.mb-16 { margin-bottom: calc(var(--spacing-xl) * 4); }

.ml-0 { margin-left: 0; }
.ml-1 { margin-left: var(--spacing-xs); }
.ml-2 { margin-left: var(--spacing-sm); }
.ml-3 { margin-left: var(--spacing-md); }
.ml-4 { margin-left: var(--spacing-lg); }
.ml-5 { margin-left: var(--spacing-xl); }

.mr-0 { margin-right: 0; }
.mr-1 { margin-right: var(--spacing-xs); }
.mr-2 { margin-right: var(--spacing-sm); }
.mr-3 { margin-right: var(--spacing-md); }
.mr-4 { margin-right: var(--spacing-lg); }
.mr-5 { margin-right: var(--spacing-xl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }
.p-5 { padding: var(--spacing-xl); }

.pt-0 { padding-top: 0; }
.pt-1 { padding-top: var(--spacing-xs); }
.pt-2 { padding-top: var(--spacing-sm); }
.pt-3 { padding-top: var(--spacing-md); }
.pt-4 { padding-top: var(--spacing-lg); }
.pt-5 { padding-top: var(--spacing-xl); }

.pb-0 { padding-bottom: 0; }
.pb-1 { padding-bottom: var(--spacing-xs); }
.pb-2 { padding-bottom: var(--spacing-sm); }
.pb-3 { padding-bottom: var(--spacing-md); }
.pb-4 { padding-bottom: var(--spacing-lg); }
.pb-5 { padding-bottom: var(--spacing-xl); }

.py-20 { padding-top: 5rem; padding-bottom: 5rem; }
.py-32 { padding-top: 8rem; padding-bottom: 8rem; }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }

.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }

.w-full { width: 100%; }
.h-full { height: 100%; }
.w-16 { width: 4rem; }
.h-16 { height: 4rem; }

.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

.z-10 { z-index: 10; }
.z-20 { z-index: 20; }
.z-30 { z-index: 30; }
.z-40 { z-index: 40; }
.z-50 { z-index: 50; }

.rounded { border-radius: var(--radius-md); }
.rounded-sm { border-radius: var(--radius-sm); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: 9999px; }

.shadow { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

.bg-white { background-color: var(--intovee-white); }
.bg-gray-50 { background-color: var(--intovee-gray-50); }
.bg-gray-100 { background-color: var(--intovee-gray-100); }
.bg-gray-200 { background-color: var(--intovee-gray-200); }
.bg-gray-800 { background-color: var(--intovee-gray-800); }
.bg-gray-900 { background-color: var(--intovee-gray-900); }
.bg-gray-950 { background-color: var(--intovee-gray-950); }
.bg-indigo-500 { background-color: var(--intovee-primary); }

.text-white { color: var(--intovee-white); }
.text-gray-300 { color: var(--intovee-gray-300); }
.text-gray-400 { color: var(--intovee-gray-400); }
.text-gray-600 { color: var(--intovee-gray-600); }
.text-gray-700 { color: var(--intovee-gray-700); }
.text-gray-800 { color: var(--intovee-gray-800); }
.text-gray-900 { color: var(--intovee-gray-900); }

.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }
.text-4xl { font-size: 2.25rem; }
.text-6xl { font-size: 3.75rem; }

.font-bold { font-weight: 700; }
.font-extrabold { font-weight: 800; }

.leading-tight { line-height: 1.25; }
.tracking-tight { letter-spacing: -0.025em; }

.max-w-2xl { max-width: 42rem; }
.max-w-6xl { max-width: 72rem; }

.mx-auto { margin-left: auto; margin-right: auto; }

.transform { transform: translateZ(0); }
.hover-scale-105:hover { transform: scale(1.05); }

.transition-all { transition: all 150ms cubic-bezier(0.4, 0, 0.2, 1); }

.backdrop-blur-sm { backdrop-filter: blur(4px); }

.border-gray-600 { border-color: var(--intovee-gray-600); }
.border-gray-700 { border-color: var(--intovee-gray-700); }
.border-gray-800 { border-color: var(--intovee-gray-800); }
.hover-border-indigo-500:hover { border-color: var(--intovee-primary); }

/* ===== Hero Section ===== */
.hero-section {
    background: linear-gradient(to bottom, var(--intovee-gray-900), var(--intovee-gray-800));
}

/* ===== Background Gradients ===== */
.bg-gradient-to-b {
    background-image: linear-gradient(to bottom, var(--intovee-gray-900), var(--intovee-gray-800));
}

/* ===== Flexbox Utilities ===== */
.flex-col { flex-direction: column; }
.flex-row { flex-direction: row; }

@media (min-width: 640px) {
    .sm-flex-row { flex-direction: row; }
}

@media (min-width: 768px) {
    .md-flex-row { flex-direction: row; }
}

/* ===== 3-column flex layout for profile-desktop.html ===== */
.main-content-grid {
  display: flex;
  gap: 2rem;
}
.main-content-grid > div {
  flex: 1 1 0;
  min-width: 0;
}
@media (max-width: 1024px) {
  .main-content-grid {
    flex-direction: column;
    gap: 1.5rem;
  }
}