* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #0a1628;
    --bg-secondary: #111d2e;
    --bg-card: #1a2942;
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --accent: #f6c744;
    --accent-hover: #f8d36a;
    --lean: #4ade80;
    --normal: #22d3ee;
    --turked: #fb923c;
    --turked-out: #ef4444;
    --border-radius: 12px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 480px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 2rem;
}

h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--accent) 0%, #fcd34d 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Calculator Form */
.calculator {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 2rem;
}

.unit-toggle {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.unit-btn {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 1px solid #1e3a5f;
    background: var(--bg-card);
    color: var(--text-secondary);
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

.unit-btn:hover {
    border-color: var(--accent);
}

.unit-btn.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.input-group {
    margin-bottom: 1.25rem;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.input-with-unit {
    position: relative;
    display: flex;
    align-items: center;
}

.input-with-unit input {
    width: 100%;
    padding: 0.875rem 1rem;
    padding-right: 3rem;
    border: 1px solid #1e3a5f;
    background: var(--bg-card);
    color: var(--text-primary);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s ease;
}

.input-with-unit input:focus {
    outline: none;
    border-color: var(--accent);
}

.input-with-unit input::placeholder {
    color: #555;
}

.unit-label {
    position: absolute;
    right: 1rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.height-inputs {
    display: flex;
    gap: 0.75rem;
}

.height-inputs .input-with-unit {
    flex: 1;
}

.hidden {
    display: none !important;
}

.submit-btn {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--accent) 0%, #fcd34d 100%);
    color: #0a1628;
    border: none;
    border-radius: 8px;
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(246, 199, 68, 0.4);
}

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

/* Result Section */
.result {
    margin-bottom: 2rem;
}

.result-message {
    color: var(--text-secondary);
    font-size: 0.95rem;
    text-align: center;
    margin-bottom: 1.5rem;
    padding: 0 0.5rem;
}

/* Shareable Card - Instagram Stories format (9:16 aspect ratio) */
.share-card {
    background: linear-gradient(145deg, #0f2744 0%, #0a1e38 50%, #061222 100%);
    border-radius: var(--border-radius);
    overflow: hidden;
    margin: 0 auto 1rem;
    border: 1px solid #1e3a5f;
    /* 9:16 aspect ratio for Instagram Stories */
    width: 270px;
    height: 480px;
    display: flex;
    flex-direction: column;
}

.share-card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.share-card-logo {
    font-size: 1.125rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent) 0%, #fcd34d 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.share-card-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem 1.5rem;
    text-align: center;
}

.share-card-body h2 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
    font-weight: 800;
}

.share-card-body h2.not-turk { color: var(--lean); }
.share-card-body h2.lean { color: var(--lean); }
.share-card-body h2.normal { color: var(--normal); }
.share-card-body h2.turked { color: var(--turked); }
.share-card-body h2.turked-out { color: var(--turked-out); }

.share-card .bmi-value {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.share-card .bmi-value span {
    color: var(--text-primary);
    font-weight: 600;
}

.share-card-scale {
    width: 100%;
    padding: 0;
}

.share-card-scale .scale-bar {
    height: 28px;
    border-radius: 6px;
}

.share-card-scale .scale-segment {
    font-size: 0.6rem;
}

.share-card-scale .scale-marker {
    height: 44px;
    top: -36px;
}

.share-card-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.share-card-footer span {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Share Buttons */
.share-buttons {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.share-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1rem;
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid #1e3a5f;
    border-radius: 8px;
    font-size: 0.925rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.share-btn:hover {
    border-color: var(--accent);
    background: rgba(246, 199, 68, 0.1);
}

.share-btn svg {
    flex-shrink: 0;
}

.share-btn.copied {
    border-color: var(--lean);
    background: rgba(74, 222, 128, 0.1);
    color: var(--lean);
}

.scale-bar {
    display: flex;
    border-radius: 8px;
    overflow: hidden;
    height: 40px;
    position: relative;
}

.scale-segment {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: rgba(0, 0, 0, 0.8);
}

.scale-segment.not-turk { background: var(--lean); }
.scale-segment.lean { background: var(--lean); }
.scale-segment.normal { background: var(--normal); }
.scale-segment.turked { background: var(--turked); }
.scale-segment.turked-out { background: var(--turked-out); }

.scale-marker {
    width: 4px;
    height: 56px;
    background: white;
    border-radius: 2px;
    position: relative;
    top: -48px;
    margin: 0 auto;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    transition: margin-left 0.5s ease;
}

.reset-btn {
    width: 100%;
    padding: 0.875rem;
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid #1e3a5f;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.reset-btn:hover {
    border-color: var(--accent);
}

/* Definition Section */
.definition-section {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
}

.definition-section h3 {
    font-size: 1.125rem;
    margin-bottom: 1rem;
    color: var(--accent);
}

.dictionary-entry {
    border-left: 3px solid var(--accent);
    padding-left: 1rem;
}

.dictionary-entry .word {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.dictionary-entry .pronunciation {
    font-weight: 400;
    color: var(--text-secondary);
    font-size: 1rem;
}

.dictionary-entry .pos {
    font-style: italic;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-left: 0.5rem;
}

.dictionary-entry .definition {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 0.75rem;
}

.dictionary-entry .examples {
    margin: 1rem 0;
    padding: 0.75rem;
    background: var(--bg-card);
    border-radius: 6px;
}

.dictionary-entry .examples p {
    color: #888;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.dictionary-entry .examples p:last-child {
    margin-bottom: 0;
}

.dictionary-entry .origin {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: 0.75rem;
}

.dictionary-entry .origin strong {
    color: var(--text-primary);
}

/* Info Section */
.info-section {
    background: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 2rem;
}

.info-section h3 {
    font-size: 1.125rem;
    margin-bottom: 1rem;
    color: var(--accent);
}

.info-section p {
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    font-size: 0.925rem;
}

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

.info-section strong {
    color: var(--text-primary);
}

/* Footer */
footer {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.8rem;
    padding-top: 1rem;
    border-top: 1px solid #1e3a5f;
}

.support-section {
    margin-top: 1rem;
}

/* Responsive */
@media (max-width: 480px) {
    .container {
        padding: 1.5rem 1rem;
    }

    h1 {
        font-size: 2rem;
    }

    .result-card h2 {
        font-size: 1.5rem;
    }

    .scale-segment {
        font-size: 0.65rem;
    }
}

/* Number input arrows - hide on webkit */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

input[type="number"] {
    -moz-appearance: textfield;
}