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

:root {
    --bg: #ffffff;
    --bg-card: #ffffff;
    --bg-input: #ffffff;
    --accent: #00e5ff;
    --accent-dark: #00b8d4;
    --accent-dim: rgba(0, 229, 255, 0.12);
    --text: #0a0a0a;
    --text-dim: #666666;
    --border: #e0e0e0;
    --border-light: #f0f0f0;
    --success: #00c853;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

html, body {
    height: 100%;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ===== GRID BACKGROUND ===== */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 0, 0, 0.06) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.06) 1px, transparent 1px);
    background-size: 80px 80px;
    pointer-events: none;
    z-index: 0;
}

/* ===== DECORATIVE FLOATING ELEMENTS ===== */
.decorations {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.deco {
    position: absolute;
    animation: float 6s ease-in-out infinite;
}

.deco-keychain {
    top: 8%;
    right: 5%;
    transform: rotate(12deg);
    animation-delay: 0s;
    filter: drop-shadow(4px 8px 16px rgba(0,0,0,0.12));
}

.deco-ring {
    bottom: 12%;
    right: 8%;
    animation-delay: -2s;
    animation-duration: 7s;
    filter: drop-shadow(2px 4px 12px rgba(0,0,0,0.08));
}

.deco-dots {
    left: 4%;
    top: 50%;
    transform: translateY(-50%);
    animation-delay: -1s;
    animation-duration: 8s;
    opacity: 0.6;
}

.deco-triangle {
    top: 12%;
    left: 8%;
    transform: rotate(-15deg);
    animation-delay: -3s;
    animation-duration: 7s;
    filter: drop-shadow(2px 4px 8px rgba(0,229,255,0.15));
}

.deco-lines {
    bottom: 15%;
    left: 3%;
    transform: rotate(-8deg);
    animation-delay: -4s;
    animation-duration: 9s;
    opacity: 0.7;
}

.deco-circle-small {
    top: 45%;
    right: 4%;
    animation-delay: -2.5s;
    animation-duration: 5s;
}

.deco-keychain2 {
    bottom: 6%;
    left: 50%;
    transform: translateX(-50%) rotate(-5deg);
    animation-delay: -1.5s;
    animation-duration: 8s;
    filter: drop-shadow(3px 6px 12px rgba(0,0,0,0.1));
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(var(--rotate, 0deg)); }
    50%      { transform: translateY(-14px) rotate(var(--rotate, 0deg)); }
}

.deco-keychain  { --rotate: 12deg; }
.deco-triangle  { --rotate: -15deg; }
.deco-lines     { --rotate: -8deg; }
.deco-keychain2 { --rotate: -5deg; }

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-14px);
    }
}

/* ===== SCREENS ===== */
.screen {
    min-height: 100vh;
    display: none;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.screen.active {
    display: flex;
    animation: fadeIn 0.6s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}

.container {
    width: 100%;
    max-width: 460px;
    padding: 32px 24px;
    text-align: center;
}

/* ===== WELCOME SCREEN ===== */
.welcome-label {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 3px;
    color: var(--text-dim);
    border: 1px solid var(--border);
    padding: 6px 16px;
    border-radius: 100px;
    margin-bottom: 28px;
    text-transform: uppercase;
}

.welcome-title {
    font-weight: 900;
    font-size: 3.2rem;
    line-height: 1.08;
    color: var(--text);
    margin-bottom: 20px;
    letter-spacing: -1.5px;
}

.welcome-sub {
    color: var(--text-dim);
    font-size: 1rem;
    font-weight: 400;
    margin-bottom: 40px;
    letter-spacing: 0.3px;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 36px;
    border: none;
    border-radius: 100px;
    font-family: var(--font);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 0.3px;
}

.btn-arrow {
    transition: transform 0.3s ease;
}

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

.btn-primary:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 229, 255, 0.25);
}

.btn-primary:hover .btn-arrow {
    transform: translateX(4px);
}

.btn-primary:disabled {
    background: var(--border);
    color: #aaa;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

.btn-primary:disabled .btn-arrow {
    opacity: 0.4;
}

/* ===== SECTION TITLE ===== */
.section-title {
    font-size: 1.6rem;
    font-weight: 800;
    margin-bottom: 28px;
    color: var(--text);
    letter-spacing: -0.5px;
}

/* ===== PREVIEW BOX ===== */
.preview-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 28px 20px 18px;
    margin-bottom: 24px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.keychain-preview {
    width: 100%;
    max-width: 380px;
    margin: 0 auto;
}

.keychain-svg {
    width: 100%;
    height: auto;
    display: block;
}

.preview-hint {
    color: var(--text-dim);
    font-size: 0.75rem;
    margin-top: 14px;
    letter-spacing: 0.5px;
    font-weight: 500;
}

/* ===== INPUT ===== */
.input-group {
    margin-bottom: 20px;
    text-align: left;
    position: relative;
}

.input-group label {
    display: block;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-dim);
    margin-bottom: 8px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.input-group input {
    width: 100%;
    padding: 16px 18px;
    background: var(--bg-input);
    border: 2px solid var(--border);
    border-radius: 12px;
    color: var(--text);
    font-family: var(--font);
    font-size: 1.1rem;
    font-weight: 600;
    outline: none;
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.input-group input::placeholder {
    color: #bbb;
    font-weight: 400;
}

.input-group input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-dim);
}

.char-count {
    position: absolute;
    right: 14px;
    bottom: 16px;
    font-size: 0.75rem;
    font-weight: 500;
    color: #bbb;
}

/* ===== FONT PICKER ===== */
.font-picker {
    margin-bottom: 22px;
    text-align: left;
}

.font-picker-label {
    display: block;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-dim);
    margin-bottom: 8px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.font-chips {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding: 4px 2px 8px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
}

.font-chips::-webkit-scrollbar {
    height: 4px;
}

.font-chips::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 2px;
}

.font-chip {
    flex: 0 0 auto;
    min-width: 78px;
    height: 60px;
    padding: 6px 14px;
    border: 2px solid var(--border);
    border-radius: 12px;
    background: var(--bg);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    transition: border-color 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
    color: var(--text);
}

.font-chip:hover {
    border-color: #ccc;
    transform: translateY(-1px);
}

.font-chip.selected {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-dim);
}

.font-chip-sample {
    font-size: 1.4rem;
    line-height: 1;
    color: var(--text);
}

.font-chip-name {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ===== PRICE TAG ===== */
.price-tag {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px 22px;
    margin-bottom: 24px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
}

.price-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

.price-amount {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text);
}

/* ===== PAYMENT SCREEN ===== */
.loader-ring {
    width: 56px;
    height: 56px;
    margin: 0 auto 24px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.payment-sub {
    color: var(--text-dim);
    font-size: 0.95rem;
}

/* ===== SUCCESS SCREEN ===== */
.success-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
}

.checkmark-svg {
    width: 100%;
    height: 100%;
}

.checkmark-circle {
    fill: none;
    stroke: var(--success);
    stroke-width: 2;
    stroke-dasharray: 226;
    stroke-dashoffset: 226;
    animation: drawCircle 0.6s ease forwards;
}

.checkmark-tick {
    fill: none;
    stroke: var(--success);
    stroke-width: 3;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-dasharray: 60;
    stroke-dashoffset: 60;
    animation: drawTick 0.4s ease 0.5s forwards;
}

@keyframes drawCircle {
    to { stroke-dashoffset: 0; }
}

@keyframes drawTick {
    to { stroke-dashoffset: 0; }
}

.success-title {
    color: var(--success);
}

.queue-position {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 12px;
}

.queue-position span {
    color: var(--accent-dark);
}

.success-sub {
    color: var(--text-dim);
    font-size: 0.95rem;
    margin-bottom: 32px;
    line-height: 1.6;
}

.success-sub strong {
    color: var(--text);
    font-weight: 700;
}

.success-footer {
    border-top: 1px solid var(--border);
    padding-top: 20px;
}

.success-footer p {
    color: var(--text-dim);
    font-size: 0.85rem;
    letter-spacing: 0.3px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 600px) {
    .container {
        padding: 24px 18px;
    }

    .welcome-title {
        font-size: 2.4rem;
        letter-spacing: -1px;
    }

    .section-title {
        font-size: 1.3rem;
    }

    /* Scale down / hide some decorations on mobile */
    .deco-dots,
    .deco-circle-small,
    .deco-lines {
        display: none;
    }

    .deco-keychain {
        top: 3%;
        right: 2%;
        transform: scale(0.8) rotate(12deg);
    }

    .deco-ring {
        bottom: 5%;
        right: 3%;
        transform: scale(0.7);
    }

    .deco-triangle {
        top: 4%;
        left: 3%;
        transform: scale(0.7) rotate(-15deg);
    }

    .deco-keychain2 {
        bottom: 2%;
        transform: translateX(-50%) scale(0.8) rotate(-5deg);
    }
}

@media (max-width: 380px) {
    .welcome-title {
        font-size: 2rem;
    }

    .deco-keychain,
    .deco-ring,
    .deco-triangle,
    .deco-keychain2 {
        display: none;
    }
}