/* ========================================
   ACCESSIBILITY & MOTION PREFERENCES
   ======================================== */
@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;
    }
}

/* ========================================
   CSS VARIABLES
   ======================================== */
:root {
    --text-white: #ffffff;
    --text-gray: #94a3b8;
    --text-dim: #64748b;
    --mc-blue-light: #3b82f6;
    --mc-blue-glow: rgba(59, 130, 246, 0.2);
    --card-bg: rgba(15, 23, 42, 0.6);
    --card-border: rgba(59, 130, 246, 0.12);
    --card-border-hover: rgba(59, 130, 246, 0.4);
    --accent-purple: #a78bfa;
    --accent-cyan: #22d3ee;
}

/* ========================================
   REVEAL ANIMATIONS
   ======================================== */
.scroll-reveal {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity, transform;
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* Dynamic stagger delays using calc */
.scroll-reveal:nth-child(n) {
    transition-delay: calc(var(--index, 0) * 0.08s);
}

.aos-init {
    opacity: 0;
    transform: translateY(20px) rotateX(10deg);
    transition: opacity 0.5s ease-out, 
                transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.aos-animate {
    opacity: 1;
    transform: translateY(0) rotateX(0deg);
}

/* ========================================
   PAGE HEADER
   ======================================== */
.page-header {
    margin-top: 120px;
    text-align: center;
    margin-bottom: 60px;
    position: relative;
}

.page-header::before {
    content: '';
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--mc-blue-light), var(--accent-purple));
    border-radius: 2px;
    opacity: 0.7;
}

.page-title {
    font-family: 'Poppins', sans-serif;
    font-weight: 800;
    font-size: clamp(2.5rem, 5vw, 4rem);
    background: linear-gradient(135deg, var(--text-white) 0%, var(--mc-blue-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
    letter-spacing: -2px;
    line-height: 1.1;
    position: relative;
    display: inline-block;
}

.page-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, 
        transparent, 
        var(--mc-blue-glow), 
        transparent
    );
    border-radius: 2px;
}

.page-subtitle {
    color: var(--text-gray);
    font-size: clamp(1rem, 2vw, 1.25rem);
    font-weight: 400;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ========================================
   RULES GRID
   ======================================== */
.rules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    padding: 20px;
    max-width: 1400px;
    margin: 0 auto;
}

@media (max-width: 640px) {
    .rules-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 16px;
    }
}

/* ========================================
   RULE CARDS
   ======================================== */
.rule-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 32px;
    position: relative;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
}

/* Glowing corner accent */
.rule-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: radial-gradient(circle at top right, 
        var(--mc-blue-glow), 
        transparent 70%
    );
    opacity: 0;
    transition: opacity 0.3s ease;
}

/* Bottom gradient bar */
.rule-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, 
        var(--mc-blue-light), 
        var(--accent-purple), 
        var(--accent-cyan)
    );
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.rule-card:hover {
    border-color: var(--card-border-hover);
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3),
                0 0 0 1px rgba(59, 130, 246, 0.1);
}

.rule-card:hover::before {
    opacity: 1;
}

.rule-card:hover::after {
    transform: scaleX(1);
}

/* ========================================
   RULE ICON
   ======================================== */
.rule-icon {
    font-size: 3rem;
    background: linear-gradient(135deg, var(--mc-blue-light), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 24px;
    display: inline-block;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    filter: drop-shadow(0 0 20px var(--mc-blue-glow));
}

.rule-card:hover .rule-icon {
    transform: scale(1.15) rotate(5deg);
}

/* ========================================
   RULE CONTENT
   ======================================== */
.rule-content h3 {
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    font-size: clamp(1.25rem, 2vw, 1.6rem);
    color: var(--text-white);
    margin-bottom: 12px;
    letter-spacing: -0.5px;
    position: relative;
    padding-bottom: 8px;
}

.rule-content h3::before {
    content: '→';
    position: absolute;
    left: -24px;
    color: var(--mc-blue-light);
    opacity: 0;
    transition: all 0.3s ease;
}

.rule-card:hover .rule-content h3::before {
    opacity: 1;
    left: -20px;
}

.rule-content p {
    color: var(--text-gray);
    line-height: 1.7;
    font-size: 0.95rem;
    margin: 0;
}

/* ========================================
   SPECIAL CARD VARIANTS
   ======================================== */
.rule-card.featured {
    background: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.1), 
        rgba(167, 139, 250, 0.05)
    );
    border-color: var(--mc-blue-light);
}

.rule-card.featured::after {
    background: linear-gradient(90deg, 
        var(--accent-cyan), 
        var(--mc-blue-light), 
        var(--accent-purple)
    );
    height: 4px;
}

/* ========================================
   LOADING STATE
   ======================================== */
.rule-card.loading {
    pointer-events: none;
    opacity: 0.5;
}

.rule-card.loading::before {
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}
/* ========================================
   ACCESSIBILITY & MOTION PREFERENCES
   ======================================== */
@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;
    }
}

/* ========================================
   CSS VARIABLES
   ======================================== */
:root {
    --text-white: #ffffff;
    --text-gray: #94a3b8;
    --text-dim: #64748b;
    --mc-blue-light: #3b82f6;
    --mc-blue-glow: rgba(59, 130, 246, 0.2);
    --card-bg: rgba(15, 23, 42, 0.6);
    --card-border: rgba(59, 130, 246, 0.12);
    --card-border-hover: rgba(59, 130, 246, 0.4);
    --accent-purple: #a78bfa;
    --accent-cyan: #22d3ee;
}

/* ========================================
   REVEAL ANIMATIONS
   ======================================== */
.scroll-reveal {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity, transform;
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* Dynamic stagger delays using calc */
.scroll-reveal:nth-child(n) {
    transition-delay: calc(var(--index, 0) * 0.08s);
}

.aos-init {
    opacity: 0;
    transform: translateY(20px) rotateX(10deg);
    transition: opacity 0.5s ease-out, 
                transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.aos-animate {
    opacity: 1;
    transform: translateY(0) rotateX(0deg);
}

/* ========================================
   PAGE HEADER
   ======================================== */
.page-header {
    margin-top: 120px;
    text-align: center;
    margin-bottom: 60px;
    position: relative;
}

.page-header::before {
    content: '';
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--mc-blue-light), var(--accent-purple));
    border-radius: 2px;
    opacity: 0.7;
}

.page-title {
    font-family: 'Poppins', sans-serif;
    font-weight: 800;
    font-size: clamp(2.5rem, 5vw, 4rem);
    background: linear-gradient(135deg, var(--text-white) 0%, var(--mc-blue-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
    letter-spacing: -2px;
    line-height: 1.1;
    position: relative;
    display: inline-block;
}

.page-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, 
        transparent, 
        var(--mc-blue-glow), 
        transparent
    );
    border-radius: 2px;
}

.page-subtitle {
    color: var(--text-gray);
    font-size: clamp(1rem, 2vw, 1.25rem);
    font-weight: 400;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ========================================
   RULES GRID
   ======================================== */
.rules-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    padding: 20px;
    max-width: 1400px;
    margin: 0 auto;
}

@media (max-width: 640px) {
    .rules-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 16px;
    }
}

/* ========================================
   RULE CARDS
   ======================================== */
.rule-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 32px;
    position: relative;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
}

/* Glowing corner accent */
.rule-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: radial-gradient(circle at top right, 
        var(--mc-blue-glow), 
        transparent 70%
    );
    opacity: 0;
    transition: opacity 0.3s ease;
}

/* Bottom gradient bar */
.rule-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, 
        var(--mc-blue-light), 
        var(--accent-purple), 
        var(--accent-cyan)
    );
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.rule-card:hover {
    border-color: var(--card-border-hover);
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3),
                0 0 0 1px rgba(59, 130, 246, 0.1);
}

.rule-card:hover::before {
    opacity: 1;
}

.rule-card:hover::after {
    transform: scaleX(1);
}

/* ========================================
   RULE ICON
   ======================================== */
.rule-icon {
    font-size: 3rem;
    background: linear-gradient(135deg, var(--mc-blue-light), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 24px;
    display: inline-block;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    filter: drop-shadow(0 0 20px var(--mc-blue-glow));
}

.rule-card:hover .rule-icon {
    transform: scale(1.15) rotate(5deg);
}

/* ========================================
   RULE CONTENT
   ======================================== */
.rule-content h3 {
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    font-size: clamp(1.25rem, 2vw, 1.6rem);
    color: var(--text-white);
    margin-bottom: 12px;
    letter-spacing: -0.5px;
    position: relative;
    padding-bottom: 8px;
}

.rule-content h3::before {
    content: '→';
    position: absolute;
    left: -24px;
    color: var(--mc-blue-light);
    opacity: 0;
    transition: all 0.3s ease;
}

.rule-card:hover .rule-content h3::before {
    opacity: 1;
    left: -20px;
}

.rule-content p {
    color: var(--text-gray);
    line-height: 1.7;
    font-size: 0.95rem;
    margin: 0;
}

/* ========================================
   SPECIAL CARD VARIANTS
   ======================================== */
.rule-card.featured {
    background: linear-gradient(135deg, 
        rgba(59, 130, 246, 0.1), 
        rgba(167, 139, 250, 0.05)
    );
    border-color: var(--mc-blue-light);
}

.rule-card.featured::after {
    background: linear-gradient(90deg, 
        var(--accent-cyan), 
        var(--mc-blue-light), 
        var(--accent-purple)
    );
    height: 4px;
}

/* ========================================
   LOADING STATE
   ======================================== */
.rule-card.loading {
    pointer-events: none;
    opacity: 0.5;
}

.rule-card.loading::before {
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}