/* ==========================================
   ATHLETIC TRAJECTORY - PREMIUM OVERHAULED CSS
   ========================================== */

/* === ROOT VARIABLES === */
:root {
    /* Sophisticated Color Palette - Deep Midnight Blues */
    --color-primary: #4f46e5;
    --color-primary-dark: #3730a3;
    --color-primary-light: #6366f1;
    --color-secondary: #7c3aed;
    --color-accent: #0ea5e9;
    --color-accent-light: #38bdf8;
    --color-success: #059669;
    --color-warning: #f59e0b;
    
    /* Refined Neutrals */
    --color-bg-primary: #0a0e1a;
    --color-bg-secondary: #0f1420;
    --color-bg-tertiary: #151b2b;
    --color-surface: rgba(30, 41, 59, 0.4);
    --color-surface-elevated: rgba(51, 65, 85, 0.5);
    
    /* Text */
    --color-text-primary: #f8fafc;
    --color-text-secondary: #cbd5e1;
    --color-text-muted: #94a3b8;
    --color-text-dimmed: #64748b;
    
    /* Borders & Dividers */
    --color-border: rgba(148, 163, 184, 0.15);
    --color-border-light: rgba(148, 163, 184, 0.08);
    
    /* Glassmorphism */
    --glass-bg: rgba(30, 41, 59, 0.3);
    --glass-border: rgba(148, 163, 184, 0.1);
    --glass-blur: blur(16px);
    
    /* Sophisticated Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 20px -5px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 40px -10px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 30px rgba(79, 70, 229, 0.25);
    --shadow-glow-accent: 0 0 25px rgba(14, 165, 233, 0.2);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;
    --spacing-2xl: 6rem;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Lexend', 'Inter', sans-serif;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;
    
    /* 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);
}

/* === RESET & BASE === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-sans);
    background: var(--color-bg-primary);
    background-image: 
        radial-gradient(at 0% 0%, rgba(79, 70, 229, 0.08) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(14, 165, 233, 0.06) 0px, transparent 50%);
    background-attachment: fixed;
    color: var(--color-text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* === NAVIGATION === */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 14, 26, 0.7);
    backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--color-border-light);
    transition: all var(--transition-base);
}

.nav__container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav__brand {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent-light));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.nav__brand:hover {
    transform: scale(1.02);
}

.nav__links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav__link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: color var(--transition-fast);
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transition: width var(--transition-base);
}

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

.nav__link:hover::after {
    width: 100%;
}

/* === BUTTONS === */
.btn {
    padding: 0.875rem 2rem;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.95rem;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn--primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: white;
    box-shadow: var(--shadow-md), var(--shadow-glow);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
}

.btn--primary:active {
    transform: translateY(0);
}

.btn--secondary {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    color: var(--color-text-primary);
    border: 1px solid var(--glass-border);
}

.btn--secondary:hover {
    border-color: var(--color-primary);
    background: rgba(79, 70, 229, 0.1);
}

.btn--large {
    padding: 1.125rem 2.75rem;
    font-size: 1.05rem;
}

.btn--share {
    gap: 0.75rem;
}

.btn__loader {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    display: none;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* === HERO SECTION === */
.hero {
    padding: 9rem 2rem 7rem;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -10%;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(79, 70, 229, 0.12) 0%, transparent 65%);
    pointer-events: none;
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: translateX(-50%) scale(1); opacity: 0.8; }
    50% { transform: translateX(-50%) scale(1.05); opacity: 1; }
}

.hero__container {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    position: relative;
}

.hero__title {
    font-family: var(--font-display);
    font-size: 3.75rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.75rem;
    background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: fadeInUp 0.8s ease-out;
}

.hero__subtitle {
    font-size: 1.3rem;
    color: var(--color-text-secondary);
    margin-bottom: 3.5rem;
    line-height: 1.8;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.hero__cta {
    display: flex;
    gap: 1.25rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

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

/* === SECTIONS === */
.how-it-works, .methodology, .testimonials {
    padding: 6rem 2rem;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 4.5rem;
}

.section-title {
    font-family: var(--font-display);
    font-size: 2.75rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    color: var(--color-text-primary);
}

.section-subtitle {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
}

/* === HOW IT WORKS === */
.how-it-works {
    background: var(--color-bg-secondary);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.step {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    padding: 2.75rem 2.25rem;
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
    transition: all var(--transition-base);
    position: relative;
}

.step:hover {
    transform: translateY(-8px);
    border-color: rgba(79, 70, 229, 0.3);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.step__number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: white;
    border-radius: var(--radius-full);
    font-weight: 700;
    font-size: 1.3rem;
    margin-bottom: 1.75rem;
    box-shadow: var(--shadow-glow);
}

.step__title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
    color: var(--color-text-primary);
}

.step__description {
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* === METHODOLOGY === */
.methodology__container {
    max-width: 1200px;
    margin: 0 auto;
}

.methodology__content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 2.5rem;
    margin-bottom: 3.5rem;
}

.methodology__principles,
.methodology__accuracy,
.methodology__limitations {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
}

.methodology__heading {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 1.75rem;
    color: var(--color-text-primary);
}

.methodology__list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.methodology__list li {
    padding-left: 1.75rem;
    position: relative;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.methodology__list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: 700;
}

.accuracy-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.75rem;
}

.accuracy-metric {
    text-align: center;
    padding: 1.75rem 1.25rem;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
}

.accuracy-metric__value {
    display: block;
    font-size: 2.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

.accuracy-metric__label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--color-text-primary);
}

.accuracy-metric__note {
    display: block;
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.disclaimer {
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: var(--radius-xl);
    padding: 2rem;
}

.disclaimer__text {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* === TESTIMONIALS === */
.testimonials {
    background: var(--color-bg-secondary);
}

.testimonials__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.testimonial {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
    transition: all var(--transition-base);
}

.testimonial:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(79, 70, 229, 0.2);
}

.testimonial__text {
    color: var(--color-text-secondary);
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 1.75rem;
    font-style: italic;
}

.testimonial__author {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.testimonial__avatar {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: white;
    box-shadow: var(--shadow-glow);
}

.testimonial__name {
    font-weight: 600;
    color: var(--color-text-primary);
}

.testimonial__role {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* === CALCULATOR SECTION === */
.calculator {
    min-height: 100vh;
    padding: 7rem 2rem 5rem;
}

.calculator__container {
    max-width: 900px;
    margin: 0 auto;
}

.calculator__header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.calculator__title {
    font-family: var(--font-display);
    font-size: 2.75rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
}

.calculator__subtitle {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
}

/* Progress Bar */
.progress {
    margin-bottom: 3.5rem;
}

.progress__bar {
    width: 100%;
    height: 10px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: 1rem;
    border: 1px solid var(--glass-border);
}

.progress__fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transition: width var(--transition-slow);
    border-radius: var(--radius-full);
    box-shadow: 0 0 20px rgba(79, 70, 229, 0.4);
}

.progress__label {
    text-align: center;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
}

/* Form */
.calculator__form {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    padding: 3.5rem;
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-xl);
}

.form-step {
    animation: fadeIn 0.5s ease-out;
}

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

.form-section {
    margin-bottom: 2.5rem;
}

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-text-primary);
    font-size: 0.95rem;
}

/* === PREMIUM CUSTOM SELECT & INPUT STYLING === */
.form-input,
.form-select {
    width: 100%;
    padding: 1.125rem 1.25rem;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: 1rem;
    font-family: var(--font-sans);
    transition: all var(--transition-base);
    appearance: none;
}

.form-input::placeholder {
    color: var(--color-text-dimmed);
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--color-primary);
    background: rgba(79, 70, 229, 0.05);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
}

/* Custom Select Dropdown Arrow */
.form-select {
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1.25rem center;
    padding-right: 3rem;
    cursor: pointer;
}

.form-select:hover {
    border-color: var(--color-primary);
    background-color: rgba(79, 70, 229, 0.03);
}

/* Sport Grid */
.sport-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.25rem;
}

.sport-grid input[type="radio"] {
    display: none;
}

.sport-card {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.sport-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md), var(--shadow-glow);
    background: rgba(79, 70, 229, 0.05);
}

.sport-grid input[type="radio"]:checked + .sport-card {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.15), rgba(14, 165, 233, 0.15));
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.sport-card__icon {
    font-size: 3rem;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.sport-card__name {
    font-weight: 600;
    color: var(--color-text-primary);
    font-size: 1.05rem;
}

/* Form Actions */
.form-actions {
    display: flex;
    gap: 1.25rem;
    justify-content: flex-end;
    margin-top: 3rem;
}

/* === RESULTS SECTION - GLASSMORPHISM OVERHAUL === */
.results {
    animation: fadeInUp 0.8s ease-out;
}

.results__header {
    text-align: center;
    margin-bottom: 4rem;
}

.results__title {
    font-family: var(--font-display);
    font-size: 2.75rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
}

.results__subtitle {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
}

/* Trajectory Graph - Glassmorphism */
.trajectory-graph-container {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    padding: 3rem 2.5rem;
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
    margin-bottom: 3rem;
    box-shadow: var(--shadow-lg);
}

.trajectory-graph__title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 2rem;
    text-align: center;
    color: var(--color-text-primary);
}

.trajectory-graph {
    width: 100%;
    max-width: 800px;
    margin: 0 auto 2rem;
}

.trajectory-legend {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    flex-wrap: wrap;
    padding-top: 1rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.legend-marker {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.legend-marker--current {
    background: var(--color-warning);
}

.legend-marker--optimal {
    background: var(--color-success);
}

.legend-marker--potential {
    background: var(--color-primary);
}

.legend-label {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

/* Premium Metrics - More Breathing Room */
.premium-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.metric-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    padding: 2.25rem 1.75rem;
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
    text-align: center;
    transition: all var(--transition-base);
}

.metric-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(79, 70, 229, 0.3);
}

.metric-card--primary {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.12), rgba(14, 165, 233, 0.12));
    border-color: rgba(79, 70, 229, 0.3);
    box-shadow: var(--shadow-glow);
}

.metric-card__icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.metric-card__label {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.metric-card__value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
    line-height: 1;
}

.metric-card__sublabel {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: 1.5rem;
}

.metric-card__bar {
    width: 100%;
    height: 8px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
    border: 1px solid var(--glass-border);
}

.metric-card__bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transition: width var(--transition-slow);
    box-shadow: 0 0 15px rgba(79, 70, 229, 0.5);
}

/* Time Projections - Glassmorphism */
.time-projections {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    padding: 3rem 2.5rem;
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
    margin-bottom: 3rem;
    box-shadow: var(--shadow-lg);
}

.time-projections__title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 2.25rem;
    text-align: center;
    color: var(--color-text-primary);
}

.time-projections__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
}

.projection {
    text-align: center;
    padding: 2rem 1.5rem;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
    transition: all var(--transition-base);
}

.projection:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.projection--featured {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.1), rgba(14, 165, 233, 0.1));
    border: 1px solid rgba(79, 70, 229, 0.3);
    box-shadow: var(--shadow-glow);
}

.projection__period {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.projection__value {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 1.25rem;
    line-height: 1;
}

.projection__bar {
    width: 100%;
    height: 10px;
    background: var(--color-bg-primary);
    border-radius: var(--radius-full);
    overflow: hidden;
    border: 1px solid var(--glass-border);
}

.projection__fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transition: width var(--transition-slow);
    box-shadow: 0 0 15px rgba(79, 70, 229, 0.5);
}

/* Analysis Box - Glassmorphism */
.analysis-box {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    padding: 3rem 2.5rem;
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border);
    margin-bottom: 3rem;
    box-shadow: var(--shadow-lg);
}

.analysis-box__title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--color-text-primary);
}

.analysis-box__text {
    color: var(--color-text-secondary);
    line-height: 1.9;
    font-size: 1.05rem;
}

/* Results Actions */
.results__actions {
    display: flex;
    gap: 1.25rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

/* Results Info - Glassmorphism */
.results-info {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    padding: 2.25rem;
    border-radius: var(--radius-xl);
    margin-bottom: 2rem;
    border: 1px solid var(--glass-border);
}

.results-info__title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--color-text-primary);
}

.results-info__list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.results-info__list li {
    padding-left: 2rem;
    position: relative;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.results-info__list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: 700;
    font-size: 1.2rem;
}

/* Results Disclaimer */
.results-disclaimer {
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: var(--radius-xl);
    padding: 2.25rem;
}

.results-disclaimer p {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* === FOOTER === */
.footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border-light);
    padding: 2.5rem 2rem;
    margin-top: 4rem;
}

.footer__container {
    max-width: 1280px;
    margin: 0 auto;
    text-align: center;
}

.footer__text {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* === UTILITY CLASSES === */
.hidden {
    display: none !important;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
    .hero {
        padding: 7rem 1.5rem 5rem;
    }
    
    .hero__title {
        font-size: 2.5rem;
    }
    
    .hero__subtitle {
        font-size: 1.1rem;
    }
    
    .nav__links {
        gap: 1rem;
    }
    
    .nav__link {
        display: none;
    }
    
    .section-title {
        font-size: 2.25rem;
    }
    
    .calculator__form {
        padding: 2.5rem 1.75rem;
    }
    
    .sport-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .form-actions .btn {
        width: 100%;
    }
    
    .premium-metrics {
        grid-template-columns: 1fr;
    }
    
    .time-projections__grid {
        grid-template-columns: 1fr;
    }
    
    .trajectory-graph-container {
        padding: 2rem 1.5rem;
    }
    
    .results__actions {
        flex-direction: column;
    }
    
    .results__actions .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .hero__title {
        font-size: 2rem;
    }
    
    .calculator__title {
        font-size: 2rem;
    }
    
    .sport-grid {
        grid-template-columns: 1fr;
    }
}