@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400&family=JetBrains+Mono:wght@500;600;700&display=swap');

/* ==========================================================================
   Design Tokens & CSS Variables (Cyber-Fintech Theme)
   ========================================================================== */

:root {
    color-scheme: dark;

    /* Base Palette */
    --bg-base: #060913;
    --card-bg: rgba(13, 20, 38, 0.78);
    --card-border: rgba(255, 255, 255, 0.09);
    --card-glow: rgba(99, 102, 241, 0.15);

    /* Text Colors */
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --text-dim: #64748b;

    /* Input Surface */
    --input-bg: rgba(10, 16, 32, 0.72);
    --input-bg-focus: rgba(13, 22, 44, 0.95);
    --input-border: rgba(148, 163, 184, 0.22);
    --input-border-hover: rgba(129, 140, 248, 0.45);
    --input-border-focus: #818cf8;
    --input-focus-ring: rgba(99, 102, 241, 0.28);

    /* Cyber Accents */
    --accent-indigo: #6366f1;
    --accent-indigo-light: #818cf8;
    --accent-purple: #8b5cf6;
    --accent-violet: #7c3aed;
    --accent-cyan: #06b6d4;
    --accent-emerald: #10b981;
    --accent-rose: #f43f5e;
    --accent-amber: #f59e0b;

    /* Shadows & Effects */
    --shadow-card: 
        0 24px 60px -12px rgba(0, 0, 0, 0.75),
        0 0 0 1px rgba(255, 255, 255, 0.06),
        inset 0 1px 0 rgba(255, 255, 255, 0.14);
    --shadow-btn: 0 8px 24px -4px rgba(79, 70, 229, 0.52), inset 0 1px 0 rgba(255, 255, 255, 0.25);
    --shadow-btn-hover: 0 14px 32px -4px rgba(99, 102, 241, 0.68), inset 0 1px 0 rgba(255, 255, 255, 0.35);

    /* Typography */
    --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

/* ==========================================================================
   CSS Reset & Base Setup
   ========================================================================== */

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

html {
    min-height: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    min-height: 100vh;
    padding: 32px 20px;
    font-family: var(--font-sans);
    color: var(--text-primary);
    background-color: var(--bg-base);
    background-image:
        radial-gradient(circle at 12% 15%, rgba(99, 102, 241, 0.18) 0%, transparent 45%),
        radial-gradient(circle at 88% 85%, rgba(139, 92, 246, 0.16) 0%, transparent 45%),
        radial-gradient(circle at 80% 12%, rgba(6, 182, 212, 0.10) 0%, transparent 38%),
        linear-gradient(to right, rgba(255, 255, 255, 0.015) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
    background-size: 100% 100%, 100% 100%, 100% 100%, 36px 36px, 36px 36px;
    background-attachment: fixed;
    line-height: 1.5;
    display: flex;
    justify-content: center;
}

/* ==========================================================================
   Application Container
   ========================================================================== */

.app {
    width: 100%;
    max-width: 860px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

/* ==========================================================================
   Header & Sentinel Branding
   ========================================================================== */

header {
    width: 100%;
    text-align: center;
    padding: 8px 0 4px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

header h2 {
    margin: 0;
    font-size: clamp(26px, 4vw, 34px);
    font-weight: 800;
    letter-spacing: -0.03em;
    color: #ffffff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    text-shadow: 0 2px 24px rgba(129, 140, 248, 0.45);
}

header p {
    margin: 0;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 16px;
    border-radius: 9999px;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(129, 140, 248, 0.22);
    color: #c7d2fe;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.02em;
    backdrop-filter: blur(8px);
}

header p::before {
    content: '';
    display: inline-block;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background-color: var(--accent-emerald);
    box-shadow: 0 0 10px var(--accent-emerald);
    animation: statusPulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes statusPulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(0.85);
    }
}

/* ==========================================================================
   Main Form Card (Glassmorphism)
   ========================================================================== */

main {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.card {
    position: relative;
    width: 100%;
    padding: 32px 36px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    box-shadow: var(--shadow-card);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    overflow: hidden;
}

/* Subtle gradient top glow inside card */
.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 10%;
    right: 10%;
    height: 1px;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(129, 140, 248, 0.6),
        rgba(199, 210, 254, 0.8),
        rgba(129, 140, 248, 0.6),
        transparent
    );
    pointer-events: none;
}

.card h1 {
    margin: 0 0 8px;
    color: var(--text-primary);
    font-size: 26px;
    font-weight: 750;
    letter-spacing: -0.025em;
    line-height: 1.25;
}

.subtitle {
    margin: 0 0 24px;
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.5;
}

/* ==========================================================================
   Form Grid Layout
   ========================================================================== */

form {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 20px;
    row-gap: 16px;
    align-items: end;
}


/* Labels */
label {
    display: flex;
    flex-direction: column;
    gap: 7px;
    min-width: 0;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.01em;
    transition: color 0.2s ease;
}

label:focus-within {
    color: var(--accent-indigo-light);
}

/* ==========================================================================
   Input Fields & Select Elements
   ========================================================================== */

input,
select {
    display: block;
    width: 100%;
    min-width: 0;
    height: 44px;
    padding: 0 14px;
    border: 1px solid var(--input-border);
    border-radius: 10px;
    outline: none;
    background: var(--input-bg);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.25);
}

input:hover,
select:hover {
    border-color: var(--input-border-hover);
    background: rgba(14, 22, 44, 0.85);
}

input:focus,
select:focus {
    border-color: var(--input-border-focus);
    background: var(--input-bg-focus);
    box-shadow:
        0 0 0 3px var(--input-focus-ring),
        0 0 20px -2px rgba(99, 102, 241, 0.25),
        inset 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* Custom Select Dropdown Arrow */
select {
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23818cf8' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: calc(100% - 14px) center;
    background-size: 15px;
    padding-right: 40px;
    cursor: pointer;
}

select option {
    background-color: #0b1122;
    color: var(--text-primary);
    padding: 10px;
}

/* Input with Icon Wrapper */
.input-with-icon {
    position: relative;
    width: 100%;
    display: flex;
    align-items: center;
}

.input-with-icon input {
    padding-right: 42px;
}

/* Field Icon Button (Calendar / Clock Trigger) */
.field-icon-btn {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    width: 32px;
    height: 32px;
    padding: 0;
    margin: 0;
    min-height: unset;
    border: 1px solid rgba(129, 140, 248, 0.25);
    border-radius: 8px;
    background: rgba(99, 102, 241, 0.15);
    color: var(--text-primary);
    font-size: 15px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 2;
}

.field-icon-btn:hover {
    background: rgba(99, 102, 241, 0.35);
    border-color: rgba(129, 140, 248, 0.6);
    box-shadow: 0 0 12px rgba(99, 102, 241, 0.4);
    transform: translateY(-50%) scale(1.06);
    filter: none;
}

/* Polished Date and Time Picker Inputs */
input[type="date"],
input[type="time"],
input[type="datetime-local"] {
    cursor: pointer;
    font-family: var(--font-mono), var(--font-sans);
    font-size: 13.5px;
}

input[type="date"]::-webkit-calendar-picker-indicator,
input[type="time"]::-webkit-calendar-picker-indicator,
input[type="datetime-local"]::-webkit-calendar-picker-indicator {
    filter: invert(0.85) sepia(0.2) saturate(2.5) hue-rotate(185deg);
    cursor: pointer;
    opacity: 0.85;
    padding: 3px;
    margin-right: 28px;
    transition: opacity 0.2s;
}

input[type="date"]::-webkit-calendar-picker-indicator:hover,
input[type="time"]::-webkit-calendar-picker-indicator:hover,
input[type="datetime-local"]::-webkit-calendar-picker-indicator:hover {
    opacity: 1;
}

/* ==========================================================================
   Interactive Clock Widget Dropdown
   ========================================================================== */

.time-widget-container {
    position: relative;
}

.clock-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 290px;
    padding: 18px 20px;
    background: rgba(13, 20, 38, 0.96);
    border: 1px solid rgba(129, 140, 248, 0.4);
    border-radius: 18px;
    box-shadow:
        0 20px 50px rgba(0, 0, 0, 0.8),
        0 0 30px rgba(99, 102, 241, 0.25),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 14px;
    animation: clockPopup 0.25s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.clock-dropdown[hidden] {
    display: none !important;
}

@keyframes clockPopup {
    from {
        opacity: 0;
        transform: translateY(-8px) scale(0.96);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.clock-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.clock-title {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent-indigo-light);
}

.clock-now-btn {
    width: auto;
    min-height: unset;
    margin: 0;
    padding: 4px 10px;
    font-size: 11.5px;
    font-weight: 600;
    border-radius: 6px;
    background: rgba(99, 102, 241, 0.2);
    border: 1px solid rgba(129, 140, 248, 0.35);
    color: #c7d2fe;
    cursor: pointer;
    box-shadow: none;
    transition: all 0.2s ease;
}

.clock-now-btn:hover {
    background: rgba(99, 102, 241, 0.4);
    color: #ffffff;
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.3);
    transform: none;
    filter: none;
}

/* Digital Display Section */
.clock-display-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 10px 0;
    background: rgba(8, 13, 26, 0.6);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.clock-digit-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.clock-arrow-btn {
    width: 32px;
    height: 22px;
    min-height: unset;
    margin: 0;
    padding: 0;
    font-size: 11px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 5px;
    color: var(--text-secondary);
    cursor: pointer;
    box-shadow: none;
    transition: all 0.15s ease;
}

.clock-arrow-btn:hover {
    background: rgba(99, 102, 241, 0.35);
    color: #ffffff;
    border-color: rgba(129, 140, 248, 0.5);
    box-shadow: 0 0 8px rgba(99, 102, 241, 0.4);
    transform: none;
    filter: none;
}

.clock-digit {
    font-family: var(--font-mono);
    font-size: 28px;
    font-weight: 750;
    color: #ffffff;
    min-width: 44px;
    text-align: center;
    letter-spacing: -0.02em;
    text-shadow: 0 0 16px rgba(99, 102, 241, 0.5);
}

.clock-colon {
    font-family: var(--font-mono);
    font-size: 26px;
    font-weight: 700;
    color: var(--accent-indigo-light);
    margin: 0 -2px;
    animation: colonBlink 1.5s infinite;
}

@keyframes colonBlink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.clock-ampm-box {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-left: 6px;
}

.ampm-btn {
    width: 38px;
    height: 24px;
    min-height: unset;
    margin: 0;
    padding: 0;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.04em;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 6px;
    color: var(--text-dim);
    cursor: pointer;
    box-shadow: none;
    transition: all 0.2s ease;
}

.ampm-btn.active {
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    border-color: rgba(165, 180, 252, 0.4);
    color: #ffffff;
    box-shadow: 0 0 12px rgba(99, 102, 241, 0.5);
}

/* Preset Chips */
.clock-presets {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
}

.preset-chip {
    width: 100%;
    min-height: unset;
    margin: 0;
    padding: 6px 10px;
    font-size: 11px;
    font-weight: 600;
    font-family: var(--font-mono);
    border-radius: 7px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--text-secondary);
    cursor: pointer;
    box-shadow: none;
    transition: all 0.2s ease;
}

.preset-chip:hover {
    background: rgba(99, 102, 241, 0.2);
    border-color: rgba(129, 140, 248, 0.4);
    color: #ffffff;
    transform: none;
    filter: none;
}

/* Confirm Button */
.clock-confirm-btn {
    width: 100%;
    min-height: 36px;
    height: 36px;
    margin: 0;
    padding: 0;
    font-size: 12.5px;
    font-weight: 700;
    border-radius: 8px;
    background: linear-gradient(135deg, #4f46e5, #6366f1);
    border: 1px solid rgba(255, 255, 255, 0.18);
    color: #ffffff;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.4);
    transition: all 0.2s ease;
}

.clock-confirm-btn:hover {
    filter: brightness(1.1);
    box-shadow: 0 6px 18px rgba(99, 102, 241, 0.55);
    transform: none;
}

/* Monospace font accent for coordinates and numerical inputs */
input[type="number"] {
    font-family: var(--font-mono), var(--font-sans);
    font-size: 13.5px;
    letter-spacing: -0.01em;
}

/* ==========================================================================
   Cyberpunk Section Dividers
   ========================================================================== */

form h3 {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 12px 0 2px;
    padding: 0;
    border: none;
    color: var(--accent-indigo-light);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

form h3::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 2px;
    background: var(--accent-indigo);
    box-shadow: 0 0 8px var(--accent-indigo);
}

form h3::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(
        90deg,
        rgba(99, 102, 241, 0.4) 0%,
        rgba(255, 255, 255, 0.07) 50%,
        transparent 100%
    );
}

/* ==========================================================================
   Submit Button
   ========================================================================== */

button,
#submit-btn {
    grid-column: 1 / -1;
    position: relative;
    overflow: hidden;
    width: 100%;
    min-height: 48px;
    margin-top: 8px;
    padding: 12px 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 12px;
    background: linear-gradient(135deg, #4f46e5 0%, #6366f1 50%, #7c3aed 100%);
    color: #ffffff;
    font-family: var(--font-sans);
    font-size: 14.5px;
    font-weight: 700;
    letter-spacing: 0.02em;
    cursor: pointer;
    box-shadow: var(--shadow-btn);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Radiant button shimmer effect on hover */
button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.22),
        transparent
    );
    transition: transform 0.65s cubic-bezier(0.4, 0, 0.2, 1);
}

button:hover::before {
    transform: translateX(200%);
}

button:hover {
    filter: brightness(1.08);
    transform: translateY(-2px);
    box-shadow: var(--shadow-btn-hover);
}

button:active {
    transform: translateY(0);
    box-shadow: 0 4px 16px -2px rgba(79, 70, 229, 0.45);
}

button:focus-visible {
    outline: none;
    box-shadow:
        0 0 0 3px rgba(165, 180, 252, 0.5),
        0 8px 24px -4px rgba(79, 70, 229, 0.5);
}

button:disabled {
    opacity: 0.65;
    cursor: wait;
    transform: none;
    box-shadow: none;
    filter: grayscale(0.2);
}

/* ==========================================================================
   Error Alert Banner
   ========================================================================== */

.error:not([hidden]) {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 16px 0 0;
    padding: 13px 16px;
    border-radius: 12px;
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.38);
    color: #fca5a5;
    font-size: 13.5px;
    line-height: 1.5;
    overflow-wrap: anywhere;
    animation: errorSlideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.error:not([hidden])::before {
    content: '⚠️';
    font-size: 15px;
    flex-shrink: 0;
}

@keyframes errorSlideIn {
    from {
        opacity: 0;
        transform: translateY(-6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================================================
   Prediction Result Card (Telemetry Display)
   ========================================================================== */

.result:not([hidden]) {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    margin-top: 10px;
    padding: 34px 28px;
    border-radius: 20px;
    border: 1px solid rgba(129, 140, 248, 0.35);
    background: linear-gradient(180deg, rgba(17, 26, 52, 0.88) 0%, rgba(11, 17, 36, 0.88) 100%);
    box-shadow:
        0 24px 64px -12px rgba(0, 0, 0, 0.75),
        0 0 45px -10px rgba(99, 102, 241, 0.28),
        inset 0 1px 0 rgba(255, 255, 255, 0.16);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    animation: resultReveal 0.45s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes resultReveal {
    from {
        opacity: 0;
        transform: translateY(14px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.result h2 {
    margin: 0 0 14px;
    font-size: 22px;
    font-weight: 750;
    letter-spacing: -0.015em;
    color: var(--text-primary);
}

.result p:first-of-type {
    margin: 0 0 6px;
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

.result h1 {
    font-family: var(--font-mono);
    font-size: clamp(42px, 7vw, 56px);
    font-weight: 800;
    line-height: 1.1;
    margin: 0 0 14px;
    background: linear-gradient(135deg, #ffffff 40%, #c7d2fe 75%, #818cf8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 24px rgba(99, 102, 241, 0.45));
    letter-spacing: -0.03em;
}

#risk-level {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 18px;
    border-radius: 9999px;
    font-size: 13px;
    font-weight: 750;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    background: rgba(99, 102, 241, 0.15);
    color: #c7d2fe;
    border: 1px solid rgba(129, 140, 248, 0.35);
    margin: 0 0 16px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
}

#notice {
    color: var(--text-secondary);
    font-size: 13.5px;
    line-height: 1.6;
    max-width: 540px;
    margin: 0;
    background: rgba(10, 16, 32, 0.55);
    padding: 14px 20px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

/* Tablet & Compact Desktop (max 768px) */
@media (max-width: 768px) {
    body {
        padding: 24px 16px;
    }

    .card {
        padding: 26px 24px;
        border-radius: 16px;
    }

    .card h1 {
        font-size: 24px;
    }

    form {
        column-gap: 14px;
        row-gap: 14px;
    }

    input,
    select {
        height: 42px;
    }

    button,
    #submit-btn {
        min-height: 46px;
    }
}

/* Mobile Devices (max 520px) */
@media (max-width: 520px) {
    body {
        padding: 16px 12px;
    }

    .app {
        gap: 14px;
    }

    header h2 {
        font-size: 24px;
    }

    header p {
        font-size: 12px;
        padding: 4px 12px;
    }

    .card {
        padding: 22px 18px;
        border-radius: 16px;
    }

    .card h1 {
        font-size: 22px;
    }

    .subtitle {
        font-size: 13px;
        margin-bottom: 18px;
    }

    form {
        grid-template-columns: 1fr;
        row-gap: 14px;
    }

    form > label:last-of-type,
    label:has(input[name="city_population"]) {
        grid-column: 1;
    }

    form h3 {
        grid-column: 1;
        margin-top: 8px;
        font-size: 11.5px;
    }

    input,
    select {
        height: 44px;
        font-size: 13.5px;
    }

    button,
    #submit-btn {
        grid-column: 1;
        min-height: 46px;
        font-size: 14px;
    }

    .result:not([hidden]) {
        padding: 24px 18px;
    }

    .result h1 {
        font-size: 40px;
    }
}

/* ==========================================================================
   Accessibility: Reduced Motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    button:hover,
    button:active {
        transform: none !important;
    }
}