/* ========================================
   CSS Variables & Reset
   ======================================== */

:root {
    /* Brand Colors */
    --color-primary: #C41E3A;
    --color-primary-dark: #9B1830;
    --color-primary-light: #E8475E;

    --color-black: #0A0A0A;
    --color-gray-900: #1A1A1A;
    --color-gray-800: #2D2D2D;
    --color-gray-700: #404040;
    --color-gray-600: #525252;
    --color-gray-500: #737373;
    --color-gray-400: #A3A3A3;
    --color-gray-300: #D4D4D4;
    --color-gray-200: #E5E5E5;
    --color-gray-100: #F5F5F5;
    --color-gray-50: #FAFAFA;
    --color-white: #FFFFFF;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Spacing */
    --container-width: 1200px;
    --container-padding: 24px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;

    /* 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);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    overflow-x: hidden;
    max-width: 100vw;
}

a {
    color: inherit;
    text-decoration: none;
}

ul, ol {
    list-style: none;
}

img, svg {
    display: block;
    max-width: 100%;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

address {
    font-style: normal;
}

/* ========================================
   Background Dots
   ======================================== */

.bg-dots {
    position: fixed;
    top: 0;
    left: 0;
    width: 200%;
    height: 200%;
    background-image: radial-gradient(var(--color-primary) 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.07;
    pointer-events: none;
    z-index: 0;
    animation: dots-drift 60s linear infinite;
}

@keyframes dots-drift {
    0% { transform: translate(0, 0); }
    100% { transform: translate(-50%, -50%); }
}

/* ========================================
   Background Shapes
   ======================================== */

.bg-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.bg-shape {
    position: absolute;
    border-radius: 50%;
    background: var(--color-primary);
    opacity: 0.08;
}

.bg-shape-1 {
    width: 500px;
    height: 500px;
    top: -150px;
    right: -100px;
}

.bg-shape-2 {
    width: 200px;
    height: 200px;
    top: 70vh;
    left: -50px;
    background: var(--color-black);
}

/* ========================================
   Container
   ======================================== */

.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 100px;
    transition: all var(--transition-base);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px -4px rgba(196, 30, 58, 0.4);
}

.btn-lg {
    padding: 18px 36px;
    font-size: 16px;
}

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

.btn-white:hover {
    background: var(--color-gray-100);
    transform: translateY(-2px);
}

.btn-outline-subtle {
    background: transparent;
    color: var(--color-gray-700);
    border: 1px solid var(--color-gray-300);
}

.btn-outline-subtle:hover {
    background: var(--color-gray-100);
    border-color: var(--color-gray-400);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px -4px rgba(0, 0, 0, 0.15);
}

/* ========================================
   Typography Utilities
   ======================================== */

.text-accent {
    color: var(--color-primary);
}

.section-tag {
    display: inline-block;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    color: var(--color-gray-900);
    line-height: 1.25;
    letter-spacing: -0.02em;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

/* ========================================
   Back to Top
   ======================================== */

.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--radius-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--color-primary-dark);
    transform: translateY(-4px);
}

/* ========================================
   Animations - Keyframes
   ======================================== */

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

@keyframes heroWordReveal {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes panelFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* ========================================
   Responsive - Base
   ======================================== */

@media (max-width: 768px) {
    :root {
        --container-padding: 20px;
    }

    .btn {
        width: 100%;
        max-width: 280px;
    }

    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 44px;
        height: 44px;
    }
}

/* ========================================
   Print Styles
   ======================================== */

@media print {
    .back-to-top,
    .bg-dots,
    .bg-shapes {
        display: none;
    }
}