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

:root {
    --bg-primary: #121212;
    --bg-secondary: #1e1e1e;
    --bg-tertiary: #2a2a2a;
    --bg-hover: #333;
    --text-primary: #e8e8e8;
    --text-secondary: #a0a0a0;
    --text-muted: #666;
    --border: #333;
    --green-400: #66bb6a;
    --green-500: #4caf50;
    --green-600: #388e3c;
    --green-800: #1b5e20;
    --green-900: #1a3a1a;
    --red-400: #ef5350;
    --red-500: #d32f2f;
    --radius: 10px;
}

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

.hidden {
    display: none !important;
}

/* Login Screen */
.screen {
    min-height: 100vh;
}

#login-screen {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
}

.login-container {
    text-align: center;
    padding: 2rem;
}

.login-container h1 {
    font-size: 2rem;
    color: var(--green-400);
    margin-bottom: 0.5rem;
}

.login-container p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.btn-google {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-google:hover {
    background: var(--bg-tertiary);
}

/* Header */
header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

header h1 {
    font-size: 1.25rem;
    color: var(--green-400);
}

.header-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: none;
    border-radius: var(--radius);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: background 0.2s;
}

.btn-icon:hover {
    background: var(--bg-tertiary);
}

/* Calendar */
.calendar-container {
    max-width: 500px;
    margin: 1.5rem auto;
    padding: 0 1rem;
}

.calendar-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.calendar-nav h2 {
    font-size: 1.1rem;
    color: var(--text-primary);
    text-transform: capitalize;
}

.btn-nav {
    width: 36px;
    height: 36px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: 1.1rem;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-nav:hover {
    background: var(--bg-tertiary);
}

.streak-counter {
    text-align: center;
    padding: 0.75rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--green-900), rgba(76, 175, 80, 0.1));
    border: 1px solid var(--green-800);
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    color: var(--green-400);
}

.streak-counter span {
    color: var(--text-primary);
}

.calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    text-align: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: var(--radius);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: background 0.2s;
    position: relative;
}

.calendar-day:hover {
    background: var(--bg-hover);
}

.calendar-day.empty {
    background: transparent;
    cursor: default;
}

.calendar-day.today {
    border: 2px solid var(--green-500);
    color: var(--text-primary);
    font-weight: 700;
}

.calendar-day.has-entry {
    background: var(--green-900);
    color: var(--green-400);
    font-weight: 600;
}

.entry-dots {
    position: absolute;
    bottom: 3px;
    display: flex;
    gap: 2px;
}

.entry-dot {
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--green-500);
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    padding: 1rem;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 1.5rem;
    width: 100%;
    max-width: 480px;
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
}

.modal-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.modal-header-info h3 {
    font-size: 1.15rem;
    color: var(--green-400);
}

.modal-header-info .modal-weekday {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 2px;
}

.modal-header-actions {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.btn-trash {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: var(--radius);
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s, background 0.2s;
}

.btn-trash:hover {
    color: var(--red-400);
    background: rgba(239, 83, 80, 0.1);
}

.btn-close {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: var(--radius);
    background: transparent;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
}

.btn-close:hover {
    background: var(--bg-tertiary);
}

.modal-content label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.emoji-buttons {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
}

.btn-emoji {
    width: 44px;
    height: 44px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-tertiary);
    font-size: 1.75rem;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    line-height: 1;
    font-family: "Segoe UI Emoji", "Noto Color Emoji", "Apple Color Emoji", sans-serif;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
}

.btn-emoji:hover {
    background: var(--bg-hover);
    transform: scale(1.1);
}

.btn-emoji:active {
    transform: scale(0.95);
}

.btn-emoji-dash {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-secondary);
    border-style: dashed;
}

.modal-content textarea {
    width: 100%;
    min-height: 200px;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-primary);
    font-family: inherit;
    font-size: 1.05rem;
    color: var(--text-primary);
    resize: vertical;
    outline: none;
    transition: border-color 0.2s;
}

.modal-content textarea::placeholder {
    color: var(--text-muted);
}

.modal-content textarea:focus {
    border-color: var(--green-500);
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 1rem;
}

.btn-cancel {
    padding: 0.6rem 1.25rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-cancel:hover {
    background: var(--bg-tertiary);
}

.btn-save {
    padding: 0.6rem 1.5rem;
    border: none;
    border-radius: var(--radius);
    background: var(--green-600);
    color: #fff;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-save:hover {
    background: var(--green-500);
}

.btn-save:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Export Modal */
.modal-title-green {
    font-size: 1.15rem;
    color: var(--green-400);
}

.export-fields {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.export-field {
    flex: 1;
}

.export-field label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.export-field input[type="date"] {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.2s;
    color-scheme: dark;
}

.export-field input[type="date"]:focus {
    border-color: var(--green-500);
}

.export-field-email {
    margin-bottom: 1rem;
}

.export-field-email input[type="email"] {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.2s;
}

.export-field-email input[type="email"]::placeholder {
    color: var(--text-muted);
}

.export-field-email input[type="email"]:focus {
    border-color: var(--green-500);
}

.btn-email {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn-email:hover {
    background: var(--bg-hover);
}

/* Email help */
.email-label-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.email-label-row label {
    margin-bottom: 0 !important;
}

.btn-email-help {
    width: 20px;
    height: 20px;
    border: 1px solid var(--text-muted);
    border-radius: 50%;
    background: transparent;
    color: var(--text-muted);
    font-size: 0.7rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    line-height: 1;
    transition: color 0.2s, border-color 0.2s;
    flex-shrink: 0;
}

.btn-email-help:hover {
    color: var(--green-400);
    border-color: var(--green-400);
}

.modal-content-help {
    max-width: 520px;
}

.help-steps {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    margin: 1rem 0;
}

.help-step h4 {
    font-size: 0.9rem;
    color: var(--green-400);
    margin-bottom: 0.4rem;
}

.help-step p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Stats Modal */
.modal-content-stats {
    max-width: 600px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
    margin: 1rem 0;
}

.stat-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: default;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.stat-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--green-400);
}

.stat-value-small {
    font-size: 0.9rem;
    line-height: 1.3;
}

/* Card color variations */
.stat-card-fire {
    background: linear-gradient(135deg, rgba(255, 87, 34, 0.1), var(--bg-tertiary));
    border-color: rgba(255, 87, 34, 0.3);
}

.stat-card-fire .stat-value {
    color: #ff9800;
}

.stat-card-trophy {
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.1), var(--bg-tertiary));
    border-color: rgba(255, 193, 7, 0.3);
}

.stat-card-trophy .stat-value {
    color: #ffc107;
}

.stat-card-note {
    background: linear-gradient(135deg, rgba(76, 175, 80, 0.1), var(--bg-tertiary));
    border-color: var(--green-800);
}

.stat-card-calendar {
    background: linear-gradient(135deg, rgba(33, 150, 243, 0.1), var(--bg-tertiary));
    border-color: rgba(33, 150, 243, 0.3);
}

.stat-card-calendar .stat-value {
    color: #42a5f5;
}

.stat-card-chart {
    background: linear-gradient(135deg, rgba(156, 39, 176, 0.1), var(--bg-tertiary));
    border-color: rgba(156, 39, 176, 0.3);
}

.stat-card-chart .stat-value {
    color: #ab47bc;
}

.stat-card-star {
    background: linear-gradient(135deg, rgba(255, 235, 59, 0.1), var(--bg-tertiary));
    border-color: rgba(255, 235, 59, 0.3);
}

.stat-card-star .stat-value {
    color: #ffeb3b;
}

.stat-card-target {
    background: linear-gradient(135deg, rgba(244, 67, 54, 0.1), var(--bg-tertiary));
    border-color: rgba(244, 67, 54, 0.3);
}

.stat-card-target .stat-value {
    color: #ef5350;
}

.stat-card-heart {
    background: linear-gradient(135deg, var(--green-900), rgba(76, 175, 80, 0.1));
    border-color: var(--green-800);
}

/* Settings Modal */
.modal-content-settings {
    max-width: 400px;
}

.settings-emoji-inputs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.settings-emoji-input {
    width: 44px;
    height: 44px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 1.5rem;
    text-align: center;
    outline: none;
    transition: border-color 0.2s;
    font-family: "Segoe UI Emoji", "Noto Color Emoji", "Apple Color Emoji", sans-serif;
    padding: 0;
}

.settings-emoji-input:focus {
    border-color: var(--green-500);
}

.settings-actions {
    justify-content: space-between;
}

/* Responsive */
@media (max-width: 400px) {
    header h1 {
        font-size: 1rem;
    }

    .calendar-day {
        font-size: 0.8rem;
    }

    .modal-content {
        padding: 1rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }

    .stat-card {
        padding: 0.75rem;
    }

    .stat-icon {
        font-size: 1.5rem;
    }

    .stat-value {
        font-size: 1.5rem;
    }
}