/* ============================================================
   New Tax Break Calculator - Styles
   Dark theme with emerald green / gold financial palette
   Mobile-first, Telegram Mini App optimized
   ============================================================ */

/* --- CSS Custom Properties --- */
:root {
    /* Palette */
    --bg-primary: #0a0f0d;
    --bg-secondary: #111a16;
    --bg-card: #152019;
    --bg-card-hover: #1a2a22;
    --bg-input: #0d1612;

    --green-50: #ecfdf5;
    --green-100: #d1fae5;
    --green-200: #a7f3d0;
    --green-300: #6ee7b7;
    --green-400: #34d399;
    --green-500: #10b981;
    --green-600: #059669;
    --green-700: #047857;
    --green-800: #065f46;
    --green-900: #064e3b;

    --gold-300: #fcd34d;
    --gold-400: #fbbf24;
    --gold-500: #f59e0b;

    --text-primary: #f0fdf4;
    --text-secondary: #a7c4b8;
    --text-muted: #5e8272;
    --text-disabled: #3a5548;

    --border-subtle: rgba(16, 185, 129, 0.12);
    --border-medium: rgba(16, 185, 129, 0.25);

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 0 30px rgba(16, 185, 129, 0.15);

    /* Typography */
    --font-body: 'Space Grotesk', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Sizing */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Transitions */
    --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

#app {
    position: relative;
    max-width: 480px;
    margin: 0 auto;
    min-height: 100vh;
    min-height: 100dvh;
}

/* --- Screens --- */
.screen {
    display: none;
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.4s var(--ease-out), transform 0.4s var(--ease-out);
}

.screen.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

.screen-content {
    padding: 24px 20px 40px;
}

/* --- Intro Screen --- */
.intro-icon {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 120px;
    margin-top: 24px;
    margin-bottom: 8px;
}

.emoji-main {
    font-size: 64px;
    display: block;
    animation: pulse-gentle 3s ease-in-out infinite;
}

.emoji-float {
    position: absolute;
    font-size: 28px;
    animation: float-around 4s ease-in-out infinite;
}

.emoji-1 { top: 8px; left: 20%; animation-delay: 0s; }
.emoji-2 { top: 4px; right: 18%; animation-delay: 1.3s; }
.emoji-3 { bottom: 4px; left: 30%; animation-delay: 2.6s; }

@keyframes pulse-gentle {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.06); }
}

@keyframes float-around {
    0%, 100% { transform: translateY(0) rotate(0deg); opacity: 0.8; }
    50% { transform: translateY(-10px) rotate(8deg); opacity: 1; }
}

.intro-title {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.15;
    text-align: center;
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--green-300), var(--gold-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.intro-tagline {
    text-align: center;
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 28px;
}

.intro-info {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 32px;
    text-align: center;
}

.info-badge {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--green-400);
    background: rgba(16, 185, 129, 0.12);
    border: 1px solid rgba(16, 185, 129, 0.2);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    margin-bottom: 12px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.intro-info p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.intro-info strong {
    color: var(--green-300);
    font-weight: 600;
}

.intro-info em {
    color: var(--gold-400);
    font-style: normal;
    font-weight: 500;
}

.intro-footer {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 16px;
}

/* --- Buttons --- */
.btn-primary {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 16px 24px;
    font-family: var(--font-body);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--bg-primary);
    background: linear-gradient(135deg, var(--green-400), var(--green-500));
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s var(--ease-out);
    box-shadow: var(--shadow-md), 0 0 20px rgba(16, 185, 129, 0.2);
    position: relative;
    overflow: hidden;
}

.btn-primary::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent, rgba(255,255,255,0.15));
    opacity: 0;
    transition: opacity 0.2s;
}

.btn-primary:hover::after,
.btn-primary:active::after {
    opacity: 1;
}

.btn-primary:active {
    transform: scale(0.97);
}

.btn-secondary {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 14px 24px;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-card);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s var(--ease-out);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.btn-secondary:active {
    transform: scale(0.97);
}

/* --- Progress Bar --- */
.progress-bar {
    position: relative;
    width: 100%;
    height: 6px;
    background: var(--bg-card);
    border-radius: var(--radius-full);
    margin-bottom: 8px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--green-500), var(--green-400));
    border-radius: var(--radius-full);
    transition: width 0.5s var(--ease-out);
    box-shadow: 0 0 8px rgba(16, 185, 129, 0.4);
}

.progress-text {
    display: block;
    text-align: right;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 6px;
    margin-bottom: 20px;
}

/* --- Question Cards --- */
.question-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 24px 20px;
    margin-bottom: 16px;
    animation: slideUp 0.45s var(--ease-spring) forwards;
}

.question-card.hidden {
    display: none;
}

.question-card.answered {
    opacity: 0.5;
    pointer-events: none;
    transform: scale(0.98);
    transition: all 0.3s var(--ease-out);
}

.question-card.answered .btn-group,
.question-card.answered .slider-section {
    pointer-events: none;
}

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

.question-badge {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--green-400);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.15);
    padding: 3px 10px;
    border-radius: var(--radius-full);
    margin-bottom: 14px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.question-title {
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.35;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.question-detail {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 20px;
    line-height: 1.5;
}

/* --- Choice Buttons --- */
.btn-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.btn-group-brackets {
    flex-direction: row;
    flex-wrap: wrap;
}

.btn-choice {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 14px 20px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-input);
    border: 1.5px solid var(--border-subtle);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s var(--ease-out);
}

.btn-choice:hover {
    border-color: var(--green-500);
    color: var(--text-primary);
    background: rgba(16, 185, 129, 0.06);
}

.btn-choice:active {
    transform: scale(0.97);
}

.btn-choice.selected {
    border-color: var(--green-400);
    background: rgba(16, 185, 129, 0.12);
    color: var(--green-300);
    font-weight: 600;
    box-shadow: 0 0 12px rgba(16, 185, 129, 0.15);
}

.btn-bracket {
    flex: 1 1 auto;
    min-width: calc(33% - 8px);
    padding: 12px 8px;
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 700;
}

/* --- Slider Section --- */
.slider-section {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-subtle);
    animation: slideUp 0.35s var(--ease-spring) forwards;
}

.slider-section.hidden {
    display: none;
}

.slider-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.slider-container {
    position: relative;
    display: flex;
    align-items: center;
    gap: 16px;
}

.slider-value {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--green-300);
    min-width: 80px;
    text-align: right;
    white-space: nowrap;
}

/* Custom Range Slider */
.custom-slider {
    -webkit-appearance: none;
    appearance: none;
    flex: 1;
    height: 8px;
    background: var(--bg-input);
    border-radius: var(--radius-full);
    outline: none;
    cursor: pointer;
    border: 1px solid var(--border-subtle);
}

.custom-slider::-webkit-slider-runnable-track {
    height: 8px;
    border-radius: var(--radius-full);
}

.custom-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--green-400), var(--green-500));
    border: 3px solid var(--bg-primary);
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.4), var(--shadow-sm);
    cursor: pointer;
    margin-top: -10px;
    transition: transform 0.15s var(--ease-spring);
}

.custom-slider::-webkit-slider-thumb:active {
    transform: scale(1.15);
}

.custom-slider::-moz-range-thumb {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--green-400), var(--green-500));
    border: 3px solid var(--bg-primary);
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.4), var(--shadow-sm);
    cursor: pointer;
    transition: transform 0.15s var(--ease-spring);
}

.custom-slider::-moz-range-thumb:active {
    transform: scale(1.15);
}

.custom-slider::-moz-range-track {
    height: 8px;
    background: var(--bg-input);
    border-radius: var(--radius-full);
    border: 1px solid var(--border-subtle);
}

.slider-range {
    display: flex;
    justify-content: space-between;
    margin-top: 8px;
    margin-bottom: 20px;
}

.slider-range span {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-muted);
}

.btn-next {
    display: block;
    width: 100%;
    padding: 13px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--bg-primary);
    background: linear-gradient(135deg, var(--green-500), var(--green-600));
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s var(--ease-out);
}

.btn-next:hover {
    box-shadow: 0 0 16px rgba(16, 185, 129, 0.25);
}

.btn-next:active {
    transform: scale(0.97);
}

/* --- Results Screen --- */
.results-header {
    text-align: center;
    padding: 32px 0 28px;
}

.results-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 500;
    margin-bottom: 8px;
}

.results-amount {
    font-family: var(--font-mono);
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.1;
    background: linear-gradient(135deg, var(--green-300), var(--gold-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.results-amount.counting {
    animation: countPulse 0.15s ease-in-out;
}

@keyframes countPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.03); }
}

.results-subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* --- Breakdown --- */
.results-breakdown {
    margin-bottom: 28px;
}

.breakdown-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    margin-bottom: 8px;
    animation: slideUp 0.35s var(--ease-spring) forwards;
    animation-delay: var(--delay, 0ms);
    opacity: 0;
}

.breakdown-item.inactive {
    opacity: 0.35;
    background: transparent;
    border-color: transparent;
}

.breakdown-item.inactive .breakdown-amount {
    color: var(--text-disabled);
}

.breakdown-label {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
    min-width: 0;
}

.breakdown-name {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.breakdown-detail {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.breakdown-amount {
    font-family: var(--font-mono);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--green-400);
    margin-left: 12px;
    white-space: nowrap;
}

/* --- Equivalents --- */
.results-equivalents {
    margin-bottom: 28px;
}

.equivalents-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 14px;
}

.equivalents-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.equiv-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 16px 14px;
    text-align: center;
    animation: slideUp 0.4s var(--ease-spring) forwards;
    animation-delay: var(--delay, 0ms);
    opacity: 0;
}

.equiv-card.full-width {
    grid-column: 1 / -1;
}

.equiv-emoji {
    font-size: 1.6rem;
    margin-bottom: 6px;
    display: block;
}

.equiv-value {
    font-family: var(--font-mono);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--green-300);
    margin-bottom: 2px;
}

.equiv-label {
    font-size: 0.78rem;
    color: var(--text-muted);
    line-height: 1.3;
}

/* --- CTA Box --- */
.results-cta {
    margin-bottom: 24px;
}

.cta-box {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: var(--radius-md);
    padding: 16px;
}

.cta-icon {
    font-size: 1.3rem;
    flex-shrink: 0;
    margin-top: 1px;
}

.cta-box p {
    font-size: 0.88rem;
    color: var(--gold-300);
    line-height: 1.5;
}

/* --- Action Buttons --- */
.results-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
}

.btn-share {
    background: linear-gradient(135deg, var(--green-400), var(--green-500));
}

/* --- Disclaimer --- */
.disclaimer {
    font-size: 0.72rem;
    color: var(--text-disabled);
    text-align: center;
    line-height: 1.5;
    padding: 0 8px;
}

/* --- Confetti Canvas --- */
#confetti-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
}

/* --- Utilities --- */
.hidden {
    display: none !important;
}

/* --- Transitions for screen changes --- */
.screen.exit-left {
    animation: exitLeft 0.35s var(--ease-out) forwards;
}

@keyframes exitLeft {
    to {
        opacity: 0;
        transform: translateX(-30px);
    }
}

.screen.enter-right {
    animation: enterRight 0.4s var(--ease-out) forwards;
}

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

/* --- Scrollbar --- */
::-webkit-scrollbar {
    width: 4px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-medium);
    border-radius: var(--radius-full);
}

/* --- Safe area for Telegram --- */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
    .screen-content {
        padding-bottom: calc(40px + env(safe-area-inset-bottom));
    }
}

/* --- Small screen adjustments --- */
@media (max-height: 640px) {
    .intro-icon {
        height: 80px;
        margin-top: 12px;
    }
    .emoji-main {
        font-size: 48px;
    }
    .emoji-float {
        font-size: 22px;
    }
    .intro-title {
        font-size: 1.6rem;
    }
    .results-amount {
        font-size: 2.8rem;
    }
}

/* --- Larger phones --- */
@media (min-width: 400px) {
    .screen-content {
        padding: 28px 24px 44px;
    }
    .question-card {
        padding: 28px 24px;
    }
}