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

:root {
    --bg: #F7F6F2;
    --bg2: #EEECEA;
    --surface: #FFFFFF;
    --border: #E2DFD6;
    --text: #1A1915;
    --text2: #6B6860;
    --text3: #A09D97;
    --accent: #1D9E75;
    --accent-glow: rgba(29, 158, 117, 0.18);
    --accent-dark: #0F6E56;
    --digit-bg: #F0EEE8;
    --digit-border: #E2DFD6;
    --digit-active-border: #1D9E75;
    --pill: #F0EEE8;
    --pill-text: #6B6860;
    --card-shadow: 0 2px 24px rgba(0, 0, 0, 0.07), 0 1px 4px rgba(0, 0, 0, 0.04);
    --logo-bg: #1D9E75;
}

[data-theme="dark"] {
    --bg: #0C0C0C;
    --bg2: #141414;
    --surface: #1A1A1A;
    --border: #2A2A2A;
    --text: #F0EFEB;
    --text2: #A09D97;
    --text3: #5A5856;
    --accent: #22B882;
    --accent-glow: rgba(34, 184, 130, 0.15);
    --accent-dark: #1D9E75;
    --digit-bg: #1F1F1F;
    --digit-border: #2E2E2E;
    --digit-active-border: #22B882;
    --pill: #1F1F1F;
    --pill-text: #A09D97;
    --card-shadow: 0 2px 32px rgba(0, 0, 0, 0.4), 0 1px 6px rgba(0, 0, 0, 0.3);
    --logo-bg: #22B882;
}

body {
    font-family: 'Vazirmatn', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s, color 0.3s;
    overflow: hidden;
    position: relative;
}

/* ─── Ambient blobs ─── */
.blob {
    position: fixed;
    border-radius: 50%;
    filter: blur(80px);
    pointer-events: none;
    transition: opacity 0.4s;
    z-index: 0;
}

.blob-1 {
    width: 400px;
    height: 400px;
    background: var(--accent-glow);
    top: -80px;
    right: -80px;
    opacity: 0.7;
}

.blob-2 {
    width: 300px;
    height: 300px;
    background: rgba(83, 74, 183, 0.07);
    bottom: -60px;
    left: -60px;
    opacity: 0.6;
}

[data-theme="dark"] .blob-1 {
    opacity: 0.5;
}

[data-theme="dark"] .blob-2 {
    opacity: 0.4;
}

/* ─── Dark mode toggle ─── */
.dm-btn {
    position: fixed;
    top: 20px;
    left: 20px;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--surface);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text2);
    font-size: 18px;
    transition: all 0.2s;
    z-index: 100;
    box-shadow: var(--card-shadow);
}

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

/* ─── Card ─── */
.card {
    position: relative;
    z-index: 10;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 40px 36px 36px;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--card-shadow);
    transition: background 0.3s, border-color 0.3s, box-shadow 0.3s;
}

/* ─── Logo ─── */
.logo-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 32px;
}

.logo-icon {
    width: 44px;
    height: 44px;
    background: var(--logo-bg);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 22px;
    flex-shrink: 0;
    transition: background 0.3s;
}

.logo-text-wrap {
}

.logo-name {
    font-size: 20px;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -0.03em;
}

.logo-tag {
    font-size: 11px;
    color: var(--text3);
    font-weight: 400;
    margin-top: 1px;
}

/* ─── Headline ─── */
.headline {
    font-size: 22px;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.02em;
    margin-bottom: 6px;
    line-height: 1.3;
}

.subline {
    font-size: 13px;
    color: var(--text2);
    margin-bottom: 28px;
    line-height: 1.6;
}

/* ─── Steps ─── */
.step {
    display: none;
}

.step.active {
    display: block;
}

/* ─── Phone input ─── */
.input-group {
    display: flex;
    align-items: center;
    border: 1.5px solid var(--border);
    border-radius: 14px;
    overflow: hidden;
    transition: border-color 0.2s, box-shadow 0.2s;
    background: var(--bg2);
    margin-bottom: 6px;
}

.input-group:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
    background: var(--surface);
}

.input-prefix {
    padding: 0 14px 0 0;
    font-size: 14px;
    font-weight: 600;
    color: var(--text2);
    border-left: 1.5px solid var(--border);
    height: 52px;
    display: flex;
    align-items: center;
    white-space: nowrap;
    transition: border-color 0.2s;
}

.input-group:focus-within .input-prefix {
    border-color: var(--accent);
}

.phone-input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-family: 'Vazirmatn', sans-serif;
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
    padding: 0 14px;
    height: 52px;
    letter-spacing: 0.04em;
    direction: ltr;
    text-align: left;
}

.phone-input::placeholder {
    color: var(--text3);
    letter-spacing: 0;
}

.input-hint {
    font-size: 11px;
    color: var(--text3);
    margin-bottom: 20px;
    padding-right: 4px;
}

/* ─── OTP digits ─── */
.otp-row {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-bottom: 8px;
    direction: ltr;
}

.otp-digit {
    width: 56px;
    height: 64px;
    border: 1.5px solid var(--digit-border);
    border-radius: 14px;
    background: var(--digit-bg);
    font-family: 'Vazirmatn', sans-serif;
    font-size: 24px;
    font-weight: 700;
    color: var(--text);
    text-align: center;
    outline: none;
    transition: all 0.18s;
    caret-color: var(--accent);
}

.otp-digit:focus {
    border-color: var(--digit-active-border);
    box-shadow: 0 0 0 3px var(--accent-glow);
    background: var(--surface);
    transform: translateY(-2px);
}

.otp-digit.filled {
    border-color: var(--accent);
    background: var(--accent-glow);
}

.otp-digit.error {
    border-color: #E24B4A;
    box-shadow: 0 0 0 3px rgba(226, 75, 74, 0.12);
    animation: shake 0.35s ease;
}

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    20% {
        transform: translateX(-5px);
    }
    60% {
        transform: translateX(5px);
    }
    80% {
        transform: translateX(-3px);
    }
}

/* ─── Timer & resend ─── */
.otp-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    padding: 0 2px;
}

.otp-sent-to {
    font-size: 12px;
    color: var(--text3);
}

.otp-sent-num {
    color: var(--text2);
    font-weight: 600;
    direction: ltr;
    display: inline-block;
}

.resend-wrap {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
}

.timer {
    color: var(--accent);
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    min-width: 28px;
    text-align: center;
}

.resend-btn {
    color: var(--accent);
    background: none;
    border: none;
    cursor: pointer;
    font-family: 'Vazirmatn', sans-serif;
    font-size: 12px;
    font-weight: 600;
    padding: 0;
    display: none;
    transition: opacity 0.15s;
}

.resend-btn:hover {
    opacity: 0.75;
}

/* ─── Verify strip ─── */
.verify-strip {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--accent-glow);
    border: 1px solid rgba(29, 158, 117, 0.2);
    border-radius: 10px;
    padding: 9px 12px;
    margin-bottom: 20px;
}

.verify-strip i {
    color: var(--accent);
    font-size: 16px;
    flex-shrink: 0;
}

.verify-strip span {
    font-size: 12px;
    color: var(--accent-dark);
    font-weight: 500;
}

[data-theme="dark"] .verify-strip span {
    color: var(--accent);
}

/* ─── Primary button ─── */
.btn-main {
    width: 100%;
    height: 52px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 14px;
    font-family: 'Vazirmatn', sans-serif;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.18s;
    position: relative;
    overflow: hidden;
    letter-spacing: -0.01em;
}

.btn-main::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0);
    transition: background 0.15s;
}

.btn-main:hover {
    background: var(--accent-dark);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px var(--accent-glow);
}

.btn-main:active {
    transform: translateY(0);
    box-shadow: none;
}

.btn-main:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-main .spinner {
    width: 20px;
    height: 20px;
    border: 2.5px solid rgba(255, 255, 255, 0.35);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    display: none;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.btn-main.loading .btn-label {
    display: none;
}

.btn-main.loading .spinner {
    display: block;
}

/* ─── Back button ─── */
.btn-back {
    display: flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    font-family: 'Vazirmatn', sans-serif;
    font-size: 13px;
    color: var(--text2);
    font-weight: 500;
    padding: 0;
    margin-bottom: 24px;
    transition: color 0.15s;
}

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

.btn-back i {
    font-size: 16px;
}

/* ─── Success state ─── */
.success-wrap {
    text-align: center;
    padding: 8px 0;
}

.success-icon {
    width: 72px;
    height: 72px;
    background: var(--accent-glow);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    animation: pop 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes pop {
    0% {
        transform: scale(0.5);
        opacity: 0;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.success-icon i {
    font-size: 36px;
    color: var(--accent);
}

.success-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}

.success-sub {
    font-size: 13px;
    color: var(--text2);
    line-height: 1.6;
    margin-bottom: 28px;
}

/* ─── Divider ─── */
.divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 20px 0;
    color: var(--text3);
    font-size: 11px;
}

.divider::before, .divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
}

/* ─── Footer ─── */
.card-footer {
    margin-top: 20px;
    text-align: center;
    font-size: 12px;
    color: var(--text3);
}

.card-footer a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
}

.card-footer a:hover {
    text-decoration: underline;
}

/* ─── Security note ─── */
.sec-note {
    display: flex;
    align-items: center;
    gap: 6px;
    justify-content: center;
    font-size: 11px;
    color: var(--text3);
    margin-top: 16px;
}

.sec-note i {
    font-size: 13px;
}

/* ─── Responsive ─── */
@media (max-width: 480px) {
    body {
        align-items: flex-start;
        padding: 0;
    }

    .card {
        border-radius: 0;
        border-left: none;
        border-right: none;
        border-top: none;
        min-height: 100vh;
        padding: 80px 24px 36px;
        box-shadow: none;
    }

    .blob-1 {
        width: 250px;
        height: 250px;
    }

    .blob-2 {
        width: 200px;
        height: 200px;
    }

    .otp-digit {
        width: 48px;
        height: 58px;
        font-size: 22px;
    }
}