/* ==========================================================================
   EMAILPRO - PREMIUM EMAIL MARKETING SAAS TEMPLATE
   ========================================================================== */

/* ==========================================================================
   CSS CUSTOM PROPERTIES (DESIGN TOKENS)
   ========================================================================== */

:root {
    /* Brand Colors */
    --color-primary: #ec4899;
    --color-primary-dark: #db2777;
    --color-primary-light: #f472b6;
    --color-secondary: #a855f7;
    --color-secondary-dark: #9333ea;
    --color-accent: #6366f1;
    --color-accent-dark: #4f46e5;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #ec4899 0%, #a855f7 50%, #6366f1 100%);
    --gradient-mesh: radial-gradient(at 40% 20%, rgba(236, 72, 153, 0.3) 0px, transparent 50%),
                      radial-gradient(at 80% 0%, rgba(168, 85, 247, 0.3) 0px, transparent 50%),
                      radial-gradient(at 0% 50%, rgba(99, 102, 241, 0.3) 0px, transparent 50%);

    /* Typography Scale */
    --text-hero: clamp(3rem, 8vw, 6rem);
    --text-display: clamp(2.5rem, 5vw, 4rem);
    --text-h1: clamp(2rem, 4vw, 3rem);
    --text-h2: clamp(1.5rem, 3vw, 2.25rem);
    --text-h3: clamp(1.25rem, 2vw, 1.5rem);
    --text-body: 1rem;
    --text-small: 0.875rem;
    --text-xs: 0.75rem;

    /* Spacing Scale */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 60px rgba(236, 72, 153, 0.3);
    --shadow-glow-lg: 0 0 100px rgba(236, 72, 153, 0.4);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 800ms cubic-bezier(0.16, 1, 0.3, 1);

    /* Light Mode Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #fafafa;
    --bg-tertiary: #f5f5f5;
    --text-primary: #171717;
    --text-secondary: #525252;
    --text-tertiary: #737373;
    --border-color: #e5e5e5;
    --border-light: #f5f5f5;
}

[data-theme="dark"],
.dark {
    /* Dark Mode Colors */
    --bg-primary: #0a0a0a;
    --bg-secondary: #171717;
    --bg-tertiary: #262626;
    --text-primary: #fafafa;
    --text-secondary: #d4d4d4;
    --text-tertiary: #a3a3a3;
    --border-color: #262626;
    --border-light: #404040;

    /* Adjusted shadows for dark mode */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.75);
}

/* ==========================================================================
   BASE STYLES
   ========================================================================== */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background: var(--color-primary);
    color: white;
}

::-webkit-scrollbar {
    width: 12px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* ==========================================================================
   TYPOGRAPHY
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

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

.font-display {
    font-weight: 800;
    letter-spacing: -0.02em;
}

/* ==========================================================================
   SCROLL REVEAL ANIMATIONS
   ========================================================================== */

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.reveal-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-left.active {
    opacity: 1;
    transform: translateX(0);
}

.reveal-right {
    opacity: 0;
    transform: translateX(40px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-right.active {
    opacity: 1;
    transform: translateX(0);
}

.reveal-scale {
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-scale.active {
    opacity: 1;
    transform: scale(1);
}

.reveal-blur {
    opacity: 0;
    filter: blur(10px);
    transform: translateY(20px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-blur.active {
    opacity: 1;
    filter: blur(0);
    transform: translateY(0);
}

/* Stagger delays */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }

/* ==========================================================================
   HOVER ANIMATIONS
   ========================================================================== */

.hover-lift {
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.hover-scale {
    transition: transform var(--transition-base);
}

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

.hover-zoom {
    overflow: hidden;
}

.hover-zoom img {
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.hover-zoom:hover img {
    transform: scale(1.1);
}

.hover-shine {
    position: relative;
    overflow: hidden;
}

.hover-shine::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.hover-shine:hover::before {
    left: 100%;
}

/* ==========================================================================
   CONTINUOUS ANIMATIONS
   ========================================================================== */

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

@keyframes pulse-ring {
    0% { transform: scale(1); opacity: 0.8; }
    100% { transform: scale(1.5); opacity: 0; }
}

.pulse-ring {
    animation: pulse-ring 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

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

.animate-gradient {
    background-size: 200% 200%;
    animation: gradient-shift 8s ease infinite;
}

@keyframes subtle-bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.animate-bounce-subtle {
    animation: subtle-bounce 2s ease-in-out infinite;
}

@keyframes spin-slow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.animate-spin-slow {
    animation: spin-slow 20s linear infinite;
}

@keyframes envelope-send {
    0% { transform: translateY(0) translateX(0); opacity: 1; }
    100% { transform: translateY(-100px) translateX(100px); opacity: 0; }
}

.animate-send {
    animation: envelope-send 2s ease-in-out infinite;
}

/* ==========================================================================
   LAYOUT COMPONENTS
   ========================================================================== */

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.section-padding {
    padding: var(--space-20) 0;
}

@media (min-width: 768px) {
    .section-padding {
        padding: var(--space-32) 0;
    }
}

/* ==========================================================================
   GLASSMORPHISM
   ========================================================================== */

.glass {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.dark .glass {
    background: rgba(23, 23, 23, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.glass-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
}

/* ==========================================================================
   BACKGROUND PATTERNS
   ========================================================================== */

.bg-mesh {
    background: var(--gradient-mesh);
}

.bg-grid {
    background-image:
        linear-gradient(rgba(0,0,0,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,0,0,0.03) 1px, transparent 1px);
    background-size: 40px 40px;
}

.dark .bg-grid {
    background-image:
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
}

.bg-dots {
    background-image: radial-gradient(circle, rgba(0,0,0,0.05) 1px, transparent 1px);
    background-size: 20px 20px;
}

.dark .bg-dots {
    background-image: radial-gradient(circle, rgba(255,255,255,0.05) 1px, transparent 1px);
}

/* ==========================================================================
   GRADIENT OVERLAYS
   ========================================================================== */

.gradient-overlay {
    position: relative;
}

.gradient-overlay::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    opacity: 0.1;
    pointer-events: none;
}

/* ==========================================================================
   GLOW EFFECTS
   ========================================================================== */

.glow {
    box-shadow: var(--shadow-glow);
}

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

.glow-primary {
    box-shadow: 0 0 60px rgba(236, 72, 153, 0.3);
}

.glow-secondary {
    box-shadow: 0 0 60px rgba(168, 85, 247, 0.3);
}

.glow-accent {
    box-shadow: 0 0 60px rgba(99, 102, 241, 0.3);
}

/* ==========================================================================
   EMAIL SPECIFIC COMPONENTS
   ========================================================================== */

.email-mockup {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.email-toolbar {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--space-3);
}

.email-content {
    padding: var(--space-6);
    min-height: 400px;
}

.stat-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    transition: all var(--transition-base);
}

.stat-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.deliverability-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    font-size: var(--text-small);
    font-weight: 600;
}

.ab-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

.ab-variant {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    position: relative;
}

.ab-variant.winner {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.ab-label {
    position: absolute;
    top: -12px;
    left: var(--space-4);
    background: var(--bg-primary);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    border: 1px solid var(--border-color);
}

/* ==========================================================================
   COUNTER ANIMATION
   ========================================================================== */

.counter {
    font-variant-numeric: tabular-nums;
    font-feature-settings: "tnum";
}

/* ==========================================================================
   PRICING TOGGLE
   ========================================================================== */

.pricing-toggle {
    position: relative;
    display: inline-flex;
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
    padding: var(--space-1);
}

.pricing-toggle button {
    padding: var(--space-2) var(--space-6);
    border-radius: var(--radius-full);
    background: transparent;
    border: none;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color var(--transition-base);
    position: relative;
    z-index: 2;
}

.pricing-toggle button.active {
    color: white;
}

.pricing-toggle-slider {
    position: absolute;
    top: var(--space-1);
    left: var(--space-1);
    bottom: var(--space-1);
    width: calc(50% - var(--space-1));
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: transform var(--transition-base);
    z-index: 1;
}

.pricing-toggle.yearly .pricing-toggle-slider {
    transform: translateX(100%);
}

/* ==========================================================================
   FEATURE COMPARISON TABLE
   ========================================================================== */

.comparison-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.comparison-table th,
.comparison-table td {
    padding: var(--space-4);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.comparison-table th {
    background: var(--bg-secondary);
    font-weight: 600;
    position: sticky;
    top: 0;
    z-index: 10;
}

.comparison-table tr:hover {
    background: var(--bg-secondary);
}

/* ==========================================================================
   INTEGRATION LOGOS
   ========================================================================== */

.integration-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-4);
}

.integration-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    text-align: center;
    transition: all var(--transition-base);
}

.integration-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
}

/* ==========================================================================
   ACCESSIBILITY
   ========================================================================== */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.focus-visible:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ==========================================================================
   REDUCED MOTION
   ========================================================================== */

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

    .reveal, .reveal-left, .reveal-right, .reveal-scale, .reveal-blur {
        opacity: 1;
        transform: none;
        filter: none;
    }
}

/* ==========================================================================
   PERFORMANCE OPTIMIZATIONS
   ========================================================================== */

section {
    content-visibility: auto;
    contain-intrinsic-size: 0 500px;
}

.will-animate {
    will-change: transform, opacity;
}

/* ==========================================================================
   PRINT STYLES
   ========================================================================== */

@media print {
    .no-print {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }
}