/* ============================================================================
   POKER CHIP CALCULATOR - MOBILE-FIRST STYLES
   Professional poker-themed design
   ============================================================================ */

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

:root {
    /* Poker Green Theme */
    --poker-green-dark: #1a472a;
    --poker-green: #2d5f3f;
    --poker-green-light: #3a7d52;

    /* Accent Colors */
    --gold: #d4af37;
    --gold-light: #f4d03f;
    --red: #c41e3a;
    --white: #ffffff;
    --black: #1a1a1a;

    /* Grays */
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-700: #495057;
    --gray-900: #212529;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background:
        url('/assets/felt-background.png'),
        radial-gradient(circle at 20% 50%, rgba(212, 175, 55, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(212, 175, 55, 0.08) 0%, transparent 50%),
        linear-gradient(135deg, var(--poker-green-dark) 0%, var(--poker-green) 100%);
    background-size: 400px 400px, cover, cover, cover;
    background-position: center, center, center, center;
    background-repeat: repeat, no-repeat, no-repeat, no-repeat;
    background-blend-mode: overlay, normal, normal, normal;
    color: var(--gray-900);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

/* ===== HEADER ===== */
.header {
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    border-bottom: 2px solid rgba(212, 175, 55, 0.3);
}

.header-banner {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.banner-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    filter: brightness(0.7);
}

.header-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(26, 71, 42, 0.4) 0%, rgba(26, 71, 42, 0.7) 100%);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: var(--white);
    text-align: center;
    padding: var(--spacing-md);
}

.header-chips {
    position: absolute;
    width: 100%;
    top: 10px;
    left: 0;
    pointer-events: none;
}

.chip-graphic {
    position: absolute;
    width: 140px;
    height: auto;
    filter: drop-shadow(6px 10px 15px rgba(0, 0, 0, 0.8));
    transition: transform 0.3s ease;
}

.chip-left {
    left: 20px;
    top: 20px;
    animation: chip-wobble 4s ease-in-out infinite;
}

.chip-right {
    right: 20px;
    top: 20px;
    animation: chip-wobble 4s ease-in-out infinite reverse;
}

@keyframes chip-wobble {
    0%, 100% { transform: rotate(-5deg); }
    50% { transform: rotate(5deg); }
}

.logo {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    color: var(--gold);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    letter-spacing: 1px;
}

.tagline {
    font-size: 0.95rem;
    opacity: 0.95;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.9);
}

/* ===== SCREENS ===== */
.screen {
    display: none;
    min-height: calc(100vh - 200px);
    padding-bottom: var(--spacing-xl);
}

.screen.active {
    display: block;
}

.screen-title {
    color: var(--white);
    text-align: center;
    font-size: 1.6rem;
    margin-bottom: var(--spacing-lg);
    font-weight: 700;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.4);
    letter-spacing: 0.5px;
}

/* ===== MODE SELECTION ===== */
.mode-cards {
    display: grid;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.mode-card {
    background: linear-gradient(145deg, #ffffff 0%, #f8f9fa 100%);
    border: 3px solid transparent;
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl) var(--spacing-lg);
    text-align: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow:
        0 10px 25px rgba(0, 0, 0, 0.15),
        inset 0 1px 0 rgba(255, 255, 255, 0.6);
    position: relative;
    overflow: hidden;
}

.mode-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.1), transparent);
    transition: left 0.5s;
}

.mode-card:hover::before {
    left: 100%;
}

.mode-card:hover {
    transform: translateY(-6px) scale(1.02);
    box-shadow:
        0 15px 35px rgba(0, 0, 0, 0.2),
        0 0 0 3px var(--gold),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.mode-card:active {
    transform: translateY(-3px) scale(1.01);
}

/* Mode Card Chip Stacks */
.mode-icon-stack {
    position: relative;
    width: 400px;
    height: 400px;
    margin: 0 auto var(--spacing-md);
}

.mode-chip {
    position: absolute;
    width: 338px;
    height: auto;
    left: 50%;
    transform: translateX(-50%);
    filter: drop-shadow(6px 10px 15px rgba(0, 0, 0, 0.7));
}

.chip-bottom {
    bottom: 0;
    z-index: 1;
}

.chip-middle {
    bottom: 37px;
    z-index: 2;
}

.chip-top {
    bottom: 75px;
    z-index: 3;
}

/* Move premium (purple) stack down to align with green chips */
.premium-stack {
    animation: premium-glow 2s ease-in-out infinite;
}

.premium-stack .chip-bottom {
    bottom: -210px;
}

.premium-stack .chip-middle {
    bottom: -173px;
}

.premium-stack .chip-top {
    bottom: -135px;
}

@keyframes premium-glow {
    0%, 100% { filter: drop-shadow(0 0 15px rgba(147, 51, 234, 0.5)); }
    50% { filter: drop-shadow(0 0 25px rgba(147, 51, 234, 0.8)); }
}

.mode-card h3 {
    font-size: 1.4rem;
    margin-bottom: var(--spacing-sm);
    color: var(--poker-green-dark);
    font-weight: 700;
}

.mode-card p {
    color: var(--gray-700);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
}

.mode-badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.mode-badge.recommended {
    background: linear-gradient(135deg, var(--poker-green) 0%, var(--poker-green-light) 100%);
    color: var(--white);
}

.mode-badge.premium {
    background: linear-gradient(135deg, var(--gold) 0%, var(--gold-light) 100%);
    color: var(--poker-green-dark);
}

/* ===== FORMS ===== */
.input-form {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--poker-green-dark);
}

input[type="number"],
input[type="text"] {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    transition: border-color 0.2s ease;
}

input[type="number"]:focus,
input[type="text"]:focus {
    outline: none;
    border-color: var(--poker-green);
}

.helper-text {
    display: block;
    font-size: 0.8rem;
    color: var(--gray-700);
    margin-top: 0.25rem;
}

/* ===== BUTTONS ===== */
.btn-primary,
.btn-secondary {
    width: 100%;
    padding: 1rem;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

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

.btn-primary:hover {
    background: var(--poker-green-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--gray-200);
    color: var(--gray-900);
}

.btn-secondary:hover {
    background: var(--gray-300);
}

.btn-large {
    padding: 1.25rem;
    font-size: 1.1rem;
}

.back-btn {
    background: transparent;
    border: none;
    color: var(--white);
    font-size: 1rem;
    padding: 0.5rem;
    margin-bottom: var(--spacing-md);
    cursor: pointer;
    transition: opacity 0.2s ease;
}

.back-btn:hover {
    opacity: 0.8;
}

/* ===== INFO BOXES ===== */
.info-box {
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.95) 0%, rgba(255, 255, 255, 0.9) 100%);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(212, 175, 55, 0.2);
}

.info-box p {
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
}

.info-box p:last-child {
    margin-bottom: 0;
}

.info-box strong {
    color: var(--poker-green-dark);
    font-weight: 700;
}

.error-box {
    background: #fee;
    border: 2px solid var(--red);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    color: var(--red);
    font-weight: 600;
}

.success-box {
    background: #efe;
    border: 2px solid #2d7a3e;
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    color: #2d7a3e;
    font-weight: 600;
    margin-top: var(--spacing-md);
}

/* ===== PREMIUM LOCK ===== */
.premium-lock {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
}

.lock-icon {
    font-size: 4rem;
    color: var(--gold);
    margin-bottom: var(--spacing-md);
}

.premium-lock h3 {
    color: var(--poker-green-dark);
    margin-bottom: var(--spacing-sm);
}

.premium-lock p {
    color: var(--gray-700);
    margin-bottom: var(--spacing-lg);
}

.license-entry {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--gray-300);
}

.license-entry input {
    margin-top: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

/* ===== RESULTS ===== */
.results-summary {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.summary-card {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-align: center;
    box-shadow: var(--shadow-md);
}

.summary-label {
    font-size: 0.9rem;
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

.summary-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--poker-green-dark);
}

.distribution-table {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-md);
}

.distribution-table h3 {
    color: var(--poker-green-dark);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.distribution-table table {
    width: 100%;
    border-collapse: collapse;
}

.distribution-table td {
    padding: 0.75rem;
    border-bottom: 1px solid var(--gray-200);
}

.distribution-table tr:last-child td {
    border-bottom: none;
    font-weight: 700;
    color: var(--poker-green-dark);
}

.chip-denom {
    font-weight: 600;
    color: var(--poker-green);
}

.chip-count {
    text-align: center;
}

.chip-value {
    text-align: right;
    font-weight: 600;
}

/* ===== LOADING SPINNER ===== */
.loading {
    text-align: center;
    padding: var(--spacing-xl);
}

.spinner {
    width: 50px;
    height: 50px;
    margin: 0 auto var(--spacing-md);
    border: 4px solid var(--gray-300);
    border-top-color: var(--poker-green);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.loading p {
    color: var(--white);
}

/* ===== MODAL ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    padding: var(--spacing-md);
    overflow-y: auto;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    max-width: 500px;
    width: 100%;
    position: relative;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: transparent;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--gray-700);
    line-height: 1;
}

.modal-content h2 {
    color: var(--poker-green-dark);
    margin-bottom: var(--spacing-md);
}

.premium-features {
    margin-bottom: var(--spacing-lg);
}

.premium-features ul {
    list-style: none;
    margin: var(--spacing-md) 0;
}

.premium-features li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.premium-features li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--poker-green);
    font-weight: 700;
}

.price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--poker-green-dark);
    text-align: center;
    margin: var(--spacing-md) 0;
}

/* ===== FOOTER ===== */
.footer {
    background: var(--poker-green-dark);
    color: var(--white);
    text-align: center;
    padding: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.footer p {
    margin-bottom: 0.25rem;
}

.small-text {
    font-size: 0.85rem;
    opacity: 0.8;
}

/* ===== CHIPSET MANAGEMENT ===== */
.chipset-cards {
    display: grid;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.chipset-card {
    background: var(--white);
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
}

.chipset-card input[type="radio"] {
    display: none;
}

.chipset-card input[type="radio"]:checked + label {
    border: 2px solid var(--poker-green);
    background: linear-gradient(145deg, #f0f8f4 0%, #ffffff 100%);
}

.chipset-card label {
    display: block;
    padding: var(--spacing-md);
    cursor: pointer;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
}

.chipset-card label:hover {
    border-color: var(--poker-green-light);
}

.chipset-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
}

.badge-default {
    background: var(--gold);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.chipset-details {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--gray-700);
}

.chipset-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.btn-small {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
    border: 1px solid var(--gray-300);
    background: var(--white);
    color: var(--gray-700);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-small:hover {
    background: var(--gray-200);
}

.btn-danger {
    color: var(--red);
    border-color: var(--red);
}

.btn-danger:hover {
    background: var(--red);
    color: var(--white);
}

/* Denomination rows */
.denomination-row {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    align-items: center;
}

.denomination-row input {
    padding: 0.6rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
}

.denom-value {
    text-align: right;
}

.denom-count {
    text-align: right;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 480px) {
    .logo {
        font-size: 1.3rem;
    }

    .tagline {
        font-size: 0.8rem;
    }

    .screen-title {
        font-size: 1.1rem;
        margin-bottom: var(--spacing-sm);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .results-summary {
        grid-template-columns: 1fr;
    }

    /* Compact header for mobile */
    .header-banner {
        height: 68px;
    }

    /* Scale down header chips */
    .chip-graphic {
        width: 31px;
    }

    .chip-left {
        left: 5px;
        top: 5px;
    }

    .chip-right {
        right: 5px;
        top: 5px;
    }

    /* Compact chip stacks for mobile to fit on screen */
    .mode-icon-stack {
        width: 122px;
        height: 122px;
    }

    .mode-chip {
        width: 103px;
    }

    .chip-bottom {
        bottom: 0;
    }

    .chip-middle {
        bottom: 11px;
    }

    .chip-top {
        bottom: 22px;
    }

    .premium-stack .chip-bottom {
        bottom: -75px;
    }

    .premium-stack .chip-middle {
        bottom: -64px;
    }

    .premium-stack .chip-top {
        bottom: -52px;
    }

    /* Reduce spacing */
    .container {
        padding: 0.4rem 0.9rem;
    }

    .mode-cards {
        gap: 0.8rem;
        margin-bottom: 0.65rem;
    }

    .mode-card {
        padding: 0.65rem 0.9rem;
    }

    .mode-card h3 {
        font-size: 0.95rem;
        margin-bottom: 0.2rem;
    }

    .mode-card p {
        font-size: 0.7rem;
        margin-bottom: 0.4rem;
    }

    .mode-badge {
        padding: 0.2rem 0.65rem;
        font-size: 0.65rem;
    }

    .info-box {
        margin-top: 0.4rem;
        padding: 0.4rem;
        font-size: 0.7rem;
    }

    .info-box p {
        margin-bottom: 0.2rem;
    }
}

/* ===== POKER DECORATIVE ELEMENTS ===== */
body::before {
    content: '';
    position: fixed;
    top: 10%;
    right: -30px;
    width: 80px;
    height: 110px;
    background:
        linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(240, 240, 240, 0.9) 100%);
    border: 2px solid rgba(212, 175, 55, 0.4);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    pointer-events: none;
    z-index: 1;
    transform: rotate(25deg);
    animation: card-float 6s ease-in-out infinite;
    opacity: 0.3;
}

body::after {
    content: '♠';
    position: fixed;
    top: 10%;
    right: 5px;
    font-size: 50px;
    color: #000;
    pointer-events: none;
    z-index: 2;
    transform: rotate(25deg);
    animation: card-float 6s ease-in-out infinite;
    opacity: 0.3;
}

/* Additional decorative chips */
.screen::before {
    content: '';
    position: fixed;
    bottom: 10%;
    left: -20px;
    width: 100px;
    height: 100px;
    background:
        radial-gradient(circle at 50% 50%, #c41e3a 0%, #c41e3a 45%, transparent 45%, transparent 48%, #fff 48%, #fff 50%, transparent 50%),
        repeating-conic-gradient(from 0deg, #c41e3a 0deg 15deg, #fff 15deg 30deg);
    border-radius: 50%;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
    pointer-events: none;
    z-index: 1;
    animation: chip-spin 20s linear infinite;
    opacity: 0.25;
}

.screen::after {
    content: '';
    position: fixed;
    top: 40%;
    right: -25px;
    width: 90px;
    height: 90px;
    background:
        radial-gradient(circle at 50% 50%, #2d5f3f 0%, #2d5f3f 45%, transparent 45%, transparent 48%, #d4af37 48%, #d4af37 50%, transparent 50%),
        repeating-conic-gradient(from 0deg, #2d5f3f 0deg 15deg, #d4af37 15deg 30deg);
    border-radius: 50%;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
    pointer-events: none;
    z-index: 1;
    animation: chip-spin 15s linear infinite reverse;
    opacity: 0.25;
}

@keyframes card-float {
    0%, 100% { transform: translateY(0px) rotate(25deg); }
    50% { transform: translateY(-15px) rotate(20deg); }
}

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

.mode-cards,
.input-form,
.info-box,
.premium-lock {
    position: relative;
    z-index: 10;
}

/* ===== UTILITIES ===== */
.text-center {
    text-align: center;
}

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }