/*
Modern & Professional Redesign for Shrish QR Generator
Author: Gemini
Date: 2024-08-08
*/

/* 1. CSS Variables & Base Styles
-------------------------------------------------- */
:root {
    --primary-color: #0052cc;
    --primary-hover: #0041a3;
    --secondary-color: #e6e8eb;
    --secondary-hover: #d1d5db;
    --text-color: #0d1117;
    --text-light: #57606a;
    --bg-color: #f6f8fa;
    --white: #ffffff;
    --border-color: #d0d7de;
    --success-color: #1f883d;
    --error-color: #cf222e;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --container-width: 1200px;
    --border-radius: 8px;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --transition: all 0.2s ease-in-out;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

/* 2. Header
-------------------------------------------------- */
.header {
    background-color: var(--white);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 0;
    /* --- ADDED FOR STICKY BEHAVIOR --- */
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

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

.header__logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-color);
}

.header__logo-img {
    height: 32px;
    width: 32px;
    margin-right: 12px;
}

.header__logo-text {
    font-size: 18px;
    font-weight: 500;
}

.header__nav a {
    color: var(--text-light);
    text-decoration: none;
    margin-left: 25px;
    font-size: 16px;
    font-weight: 500;
    transition: var(--transition);
}

.header__nav a:hover {
    color: var(--primary-color);
}

/* 3. Main Content & App Layout
-------------------------------------------------- */
.main-content {
    padding: 40px 0;
}

.app-container {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 40px;
    align-items: flex-start;
}

/* 4. Controls Panel (Left)
-------------------------------------------------- */
.controls-panel {
    background-color: var(--white);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    padding: 30px;
}

.stepper {
    display: flex;
    justify-content: space-between;
    margin-bottom: 30px;
    position: relative;
}

.stepper::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--border-color);
    transform: translateY(-50%);
    z-index: 1;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 2;
    background-color: var(--white);
    padding: 0 10px;
}

.step__icon {
    height: 32px;
    width: 32px;
    border-radius: 50%;
    background-color: var(--secondary-color);
    color: var(--text-light);
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: 600;
    transition: var(--transition);
    border: 2px solid var(--border-color);
}

.step__label {
    margin-top: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-light);
}

.step.active .step__icon {
    background-color: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

.step.active .step__label {
    color: var(--primary-color);
}

.step-content {
    display: none;
}

.step-content.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.step-title {
    font-size: 24px;
    margin-bottom: 20px;
}

.step-description {
    color: var(--text-light);
    margin-bottom: 20px;
}

.control-group {
    margin-bottom: 25px;
}

.control-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
}

.control-label .required {
    color: var(--error-color);
}

.control-label .optional {
    color: var(--text-light);
    font-weight: 400;
}

/* 5. Form Elements & Buttons
-------------------------------------------------- */
.form-input,
.form-input-file,
.form-input-select {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 16px;
    transition: var(--transition);
    background-color: var(--white);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 82, 204, 0.2);
}

.form-input-file {
    padding: 8px 15px;
}

.button-group {
    display: flex;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.button-group__btn {
    flex-grow: 1;
    padding: 12px;
    border: none;
    background-color: var(--white);
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
    color: var(--text-light);
}

.button-group__btn:not(:last-child) {
    border-right: 1px solid var(--border-color);
}

.button-group__btn.active {
    background-color: var(--primary-color);
    color: var(--white);
}

.button-group__btn i {
    margin-right: 8px;
}

.color-picker-group {
    display: flex;
    gap: 20px;
}

.color-picker-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
}

input[type="color"] {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    width: 40px;
    height: 40px;
    background-color: transparent;
    border: none;
    cursor: pointer;
}

input[type="color"]::-webkit-color-swatch {
    border-radius: 50%;
    border: 2px solid var(--border-color);
}

input[type="color"]::-moz-color-swatch {
    border-radius: 50%;
    border: 2px solid var(--border-color);
}

.slider {
    width: 100%;
}

.btn {
    padding: 12px 20px;
    border-radius: var(--border-radius);
    border: none;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn--primary {
    background-color: var(--primary-color);
    color: var(--white);
}

.btn--primary:hover {
    background-color: var(--primary-hover);
}

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

.btn--secondary:hover {
    background-color: var(--secondary-hover);
}

.btn--tertiary {
    background: none;
    color: var(--text-light);
    border: none;
}

.btn--tertiary:hover {
    color: var(--primary-color);
}

.btn--small {
    padding: 6px 12px;
    font-size: 14px;
    margin-top: 10px;
}

.error-message {
    color: var(--error-color);
    font-size: 14px;
    margin-top: 5px;
}

.step-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 30px;
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
}

.download-buttons {
    display: flex;
    gap: 15px;
}

/* 6. Preview Panel (Right)
-------------------------------------------------- */
.preview-panel {
    position: sticky;
    top: 40px;
    text-align: center;
}

.preview-card {
    background-color: var(--white);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    padding: 25px;
    box-shadow: var(--shadow);
    padding: 20px 15px;
}

.qr-code-wrapper {
    width: 100%;
    /* This is the key fix: ensures it fits its parent */
    max-width: 320px;
    /* It can be up to 320px, but no wider */
    height: auto;
    aspect-ratio: 1 / 1;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: var(--bg-color);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.qr-code-wrapper canvas,
.qr-code-wrapper svg {
    width: 100% !important;
    height: 100% !important;
}

.preview-card__footer {
    margin-top: 20px;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-light);

}

.mt-1 {
    margin-top: 1rem;
}
 
.live-link-preview {
    display: grid; /* Use Grid instead of Flexbox */
    grid-template-columns: 1fr auto; /* Text gets flexible space, button gets auto space */
    align-items: center;
    gap: 10px; /* Use gap for spacing instead of margins */
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 8px 8px 8px 15px;
    margin-top: 20px;
    margin-bottom: 10px;
    transition: var(--transition);
    overflow: hidden;
}

.live-link-preview__text {
    font-family: 'Courier New', Courier, monospace;
    font-size: 14px;
    color: var(--text-light);
    white-space: normal; /* Allow wrapping */
    overflow-wrap: break-word; /* Break long words */
    word-break: break-all; /* Fallback */
    flex-grow: 1;
    min-width: 0;
}

.live-link-preview__copy-btn {
    background-color: var(--secondary-color);
    color: var(--text-color);
    border: none;
    border-radius: 6px;
    padding: 8px 12px;
    font-weight: 600;
    font-size: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.live-link-preview__copy-btn:hover {
    background-color: var(--secondary-hover);
}

.live-link-preview__copy-btn.copied {
    background-color: var(--success-color);
    color: var(--white);
}

/* 7. Footer
-------------------------------------------------- */
.footer {
    text-align: center;
    padding: 30px 0;
    margin-top: 40px;
    border-top: 1px solid var(--border-color);
    color: var(--text-light);
    font-size: 14px;
}

.nav-toggle-btn {
    display: none;
}

/* 8. Responsive Design
-------------------------------------------------- */
@media (max-width: 992px) {
    .app-container {
        grid-template-columns: 1fr;
    }

    .preview-panel {
        position: static;
        margin-top: 30px;
    }
}

@media (max-width: 768px) {
    .header__nav {
        position: fixed;
        top: 63px;
        /* Match header height */
        left: 0;
        right: 0;
        width: 100%;
        background-color: var(--white);
        flex-direction: column;
        align-items: center;
        gap: 10px;
        padding: 25px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow);

        /* --- HIDE BY DEFAULT --- */
        opacity: 0;
        transform: translateY(-20px);
        pointer-events: none;
        transition: var(--transition);
    }

    .header__nav.is-open {
        /* --- SHOW WHEN ACTIVE --- */
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
    }

    .header__nav a {
        margin-left: 0;
        font-size: 18px;
        padding: 10px;
    }

    .nav-toggle-btn {
        display: flex;
        /* Show the button */
        background: none;
        border: none;
        font-size: 24px;
        cursor: pointer;
        color: var(--text-color);
    }

    .controls-panel {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .step {
        padding: 0 5px;
    }

    .step__label {
        font-size: 12px;
    }

    .download-buttons {
        flex-direction: column;
    }

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

    .step-navigation #prevStepBtn {
        order: 2;
    }

    .preview-card {
        padding: 20px 15px;
    }
 
    .preview-panel .btn--tertiary {
        width: 100%;
        background-color: var(--secondary-color);
        padding: 12px;
        margin-top: 1.5rem;
    }
}