/* ===== VARIABLES ===== */

:root {
    color-scheme: light;

    --bg: #F4F4F0;
    --surface: #FFFFFF;
    --text: #111111;
    --text-secondary: #777777;
    --border: #DDDDD7;
    --accent: #111111;
    --accent-text: #FFFFFF;

    --font-main: 'Manrope', sans-serif;
}

[data-theme="dark"] {
    color-scheme: dark;

    --bg: #111111;
    --surface: #1C1C1C;
    --text: #FFFFFF;
    --text-secondary: #999999;
    --border: #333333;
    --accent: #FFFFFF;
    --accent-text: #111111;
}

/* ===== RESET ===== */

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

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-main);
    min-height: 100vh;
}

/* ===== MAIN LAYOUT ===== */

#app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 40px 7%;
}

/* ===== HEADER ===== */

.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    color: var(--text);
    text-decoration: none;
    font-size: 25px;
    font-weight: 800;
    letter-spacing: -1.5px;
}

.theme-toggle {
    width: 44px;
    height: 44px;
    border: 1px solid var(--border);
    border-radius: 50%;
    background: var(--surface);
    color: var(--text);
    font-size: 22px;
    cursor: pointer;
    transition: 0.2s;
}

.theme-toggle:hover {
    transform: rotate(20deg);
}

/* ===== HERO ===== */

.hero {
    flex: 1;
    display: flex;
    align-items: center;
    padding: 80px 0;
}

.hero-content {
    max-width: 680px;
}

.eyebrow {
    display: inline-block;
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 30px;
}

.hero h1 {
    font-size: clamp(52px, 8vw, 100px);
    line-height: 1.05;
    letter-spacing: -6px;
    font-weight: 800;
    margin-bottom: 30px;
}

.hero h1 span {
    color: var(--text-secondary);
}

.hero p {
    max-width: 450px;
    color: var(--text-secondary);
    font-size: 17px;
    line-height: 1.8;
    margin-bottom: 40px;
}

/* ===== BUTTONS ===== */

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 54px;
    padding: 0 32px;
    border-radius: 999px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 700;
    transition: 0.2s ease;
}

.button-primary {
    background: var(--accent);
    color: var(--accent-text);
    border: 1px solid var(--accent);
}

.button-secondary {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border);
}

.button:hover {
    transform: translateY(-3px);
}

/* ===== FOOTER ===== */

.footer {
    display: flex;
    justify-content: space-between;
    color: var(--text-secondary);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 1px;
    padding-top: 25px;
    border-top: 1px solid var(--border);
}

/* ===== MOBILE ===== */

@media (max-width: 600px) {
    #app {
        padding: 25px 6%;
    }

    .hero {
        padding: 60px 0;
    }

    .hero h1 {
        letter-spacing: -3px;
    }

    .hero p {
        font-size: 15px;
    }

    .hero-actions {
        flex-direction: column;
    }

    .button {
        width: 100%;
    }

    .footer {
        gap: 15px;
        flex-direction: column;
    }

    .auth-content h1 {
        white-space: normal;
        font-size: 42px;
    }

    .dashboard-actions {
        grid-template-columns: 1fr;
    }
}


/* ===== AUTH ===== */

.auth {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 80px 0;
}

.auth-content {
    width: min(100%, 440px);
}

.auth-content h1 {
    white-space: nowrap;
    display: flex;
    flex-direction: column;
    gap: 4px;

    font-size: clamp(42px, 5vw, 64px);
    line-height: 1.05;
    letter-spacing: -3px;
    margin-bottom: 20px;
}

.auth-content h1 span {
    color: var(--text-secondary);
}

.auth-content > p {
    color: var(--text-secondary);
    margin-bottom: 35px;
}

#register-form,
#login-form {
    display: flex;
    flex-direction: column;
    gap: 22px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 9px;
}

.form-group label {
    font-size: 13px;
    font-weight: 700;
}

.form-group input {
    width: 100%;
    height: 54px;
    padding: 0 18px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--surface);
    color: var(--text);
    font: inherit;
    outline: none;
    transition: border-color 0.2s;
}

.form-group input:focus {
    border-color: var(--text);
}

#register-form .button,
#login-form .button {
    width: 100%;
    cursor: pointer;
    font-family: inherit;
}

.auth-footer {
    margin-top: 25px;
    text-align: center;
    font-size: 13px;
    color: var(--text-secondary);
}

.auth-footer a {
    color: var(--text);
    font-weight: 700;
    text-decoration: none;
    margin-left: 5px;
}

/* ===== FORM MESSAGE ===== */

.form-message {
    display: none;
    margin-top: 20px;
    padding: 16px 18px;
    border-radius: 14px;
    font-size: 13px;
    line-height: 1.5;
    text-align: center;
}

.form-message.success {
    display: block;
    background: #E8F7EE;
    color: #187A3D;
    border: 1px solid #A8DFC0;
}

.form-message.error {
    display: block;
    background: #FDECEC;
    color: #B42318;
    border: 1px solid #F3B5B0;
}

/* ===== DASHBOARD ===== */

.dashboard {
    flex: 1;
    padding: 80px 0;
}

.dashboard-welcome {
    max-width: 800px;
}

.dashboard-welcome h1 {
    font-size: clamp(48px, 6vw, 80px);
    line-height: 1.05;
    letter-spacing: -4px;
    margin-bottom: 25px;
}

.dashboard-welcome h1 span {
    color: var(--text-secondary);
}

#user-email {
    color: var(--text-secondary);
    font-size: 15px;
}

/* ===== EASTER EGG ===== */

.easter-egg {
    margin-top: 80px;
}

.easter-egg p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.5;
    font-weight: 500;
}

.balance-card {
    margin-top: 45px;
    padding: 30px 35px;
    width: min(100%, 520px);
    border: 1px solid var(--border);
    border-radius: 24px;
    background: var(--surface);
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.balance-label {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

#account-balance {
    font-size: clamp(42px, 5vw, 64px);
    font-weight: 800;
    line-height: 1;
    letter-spacing: -3px;
}

.dashboard-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin-top: 20px;
    width: min(100%, 720px);
}

.dashboard-action {
    padding: 24px;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: var(--surface);
    color: var(--text);
    text-align: left;
    font: inherit;
    cursor: pointer;

    display: flex;
    flex-direction: column;
    gap: 8px;

    transition:
        transform 0.2s ease,
        border-color 0.2s ease;
}

.dashboard-action:hover {
    transform: translateY(-2px);
    border-color: var(--text);
}

.action-title {
    font-size: 16px;
    font-weight: 800;
}

.action-description {
    font-size: 13px;
    line-height: 1.5;
    color: var(--text-secondary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.user-actions {
    display: none;
    align-items: center;
    gap: 20px;
}

#header-user-email {
    color: var(--text-secondary);
    font-size: 13px;
}

.header-link {
    color: var(--text);
    font-size: 13px;
    font-weight: 700;
    text-decoration: none;
}

.header-link:hover {
    opacity: 0.65;
}

.logout-button {
    padding: 0;
    border: 0;
    background: none;
    color: var(--text-secondary);
    font: inherit;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
}

.logout-button:hover {
    color: var(--text);
}

@media (max-width: 600px) {
    .header-actions {
        gap: 12px;
    }

    #header-user-email {
        display: none;
    }

    .user-actions {
        gap: 12px;
    }
}

.transfer-form {
    margin-top: 80px;
    width: min(100%, 520px);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;

    margin-bottom: 40px;

    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);

    text-decoration: none;

    transition: color 0.2s ease;
}

.back-link:hover {
    color: var(--text-primary);
}

.transaction-income {
    color: #2e8b57;
}

.transaction-expense {
    color: #c94c4c;
}

.transactions-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 28px;
}

.transaction-item {
    display: flex;
    align-items: center;
    justify-content: space-between;

    padding: 18px 20px;

    border: 1px solid var(--border-color);
    border-radius: 16px;

    background: var(--card-background);
}

.transaction-item:has(.transaction-income) {
    background: rgba(46, 139, 87, 0.06);
}

.transaction-item:has(.transaction-expense) {
    background: rgba(201, 76, 76, 0.06);
}

.transaction-info {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.transaction-title {
    font-size: 15px;
    font-weight: 600;
}

.transaction-date {
    font-size: 13px;
    color: var(--text-secondary);
}

.transaction-amount {
    font-size: 16px;
    font-weight: 700;
}

.transactions-controls {
    display: flex;
    gap: 8px;
    margin-top: 28px;
}

.transactions-controls button {
    padding: 8px 14px;

    border: 1px solid var(--border-color);
    border-radius: 10px;

    background: transparent;
    color: var(--text-secondary);

    font-family: inherit;
    font-size: 13px;
    font-weight: 600;

    cursor: pointer;
    transition: 0.2s ease;
}

.transactions-controls button:hover {
    color: var(--text-primary);
    border-color: var(--text-primary);
}

.transactions-controls button.active {
    background: var(--text-primary);
    color: var(--background);
    border-color: var(--text-primary);
}

/* ===== ABOUT ===== */
.about-section {
    margin-top: 64px;
    max-width: 720px;
}

.about-section h2 {
    margin-bottom: 20px;
}

.about-section p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.faq {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.faq-item {
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
}

.faq-question {
    width: 100%;

    display: flex;
    align-items: center;
    justify-content: space-between;

    padding: 18px 20px;

    border: none;
    background: transparent;

    color: var(--text-primary);

    font-family: inherit;
    font-size: 15px;
    font-weight: 600;

    text-align: left;
    cursor: pointer;
}

.faq-question span {
    font-size: 22px;
    font-weight: 400;

    transition: transform 0.25s ease;
}

.faq-answer {
    display: grid;
    grid-template-rows: 0fr;

    transition: grid-template-rows 0.3s ease;
}

.faq-answer p {
    overflow: hidden;
    margin: 0;
    padding: 0 20px;

    opacity: 0;

    transition:
        opacity 0.2s ease,
        padding 0.3s ease;
}

.faq-item.active .faq-answer {
    grid-template-rows: 1fr;
}

.faq-item.active .faq-answer p {
    padding: 0 20px 18px;
    opacity: 1;
}

.faq-item.active .faq-question span {
    transform: rotate(45deg);
}

.header-brand {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
}

.about-page-link {
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 600;
    text-decoration: none;
    transition: color 0.2s ease;
}

.about-page-link:hover {
    color: var(--text-primary);
}

.logo img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

@media (max-width: 600px) {
    .logo img {
        width: 34px;
        height: 34px;
    }
}